Re: [Emc-users] mister nozzle shape

[Gene Heskett]

On Friday 22 March 2019 22:55:46 Ken Strauss wrote:

> > -Original Message-
> > From: Gene Heskett [mailto:ghesk...@shentel.net]
> > Sent: Friday, March 22, 2019 10:34 PM
> > To: emc-users@lists.sourceforge.net
> > Subject: Re: [Emc-users] mister nozzle shape
> >
> > On Friday 22 March 2019 15:17:43 Ken Strauss wrote:
> > > > -Original Message-
> > > > From: Gene Heskett [mailto:ghesk...@shentel.net]
> > > > Sent: Friday, March 22, 2019 1:52 PM
> > > > To: emc-users@lists.sourceforge.net
> > > > Subject: Re: [Emc-users] mister nozzle shape
> > > >
> > > > On Friday 22 March 2019 13:07:16 Les Newell wrote:
> > > > > Hi Gene,
> > > > >
> > > > > > And you lose a lot more air thru the poorly molded flex
> > > > > > joints, probably 5x what comes out the nozzle.
> > > > > > And I've been cogitating on how to restrict the fluid flow,
> > > > > > so haven't made any chips yet.
> > > > >
> > > > > Considering the price of these coolant units
> > > > > <https://www.ebay.co.uk/itm/Mist-Coolant-Lubrication-Spray-Sys
> > > > >tem- for- CNC-8mm-Pipe-Lathe-Mill-Drill-Machine/262805869835>
> > > >
> > > > neither ships to the states.
> > >
> > > Try
> > > https://www.banggood.com/OD-2mm-x-1_6mm-ID-304-Stainless-Steel-
> >
> > Capilla
> >
> > >ry-Tub e-Length-500mm-Stainless-Pipe-p-1035176.html
> >
> > Way too big, Ken.  Thanks.
>
> It is the same size as that recommended by Les (2mm OD, 1.6mm ID).
>
The stuff I just bought 16 feet of is .029" bore  or 0.7366mm
>
>
>
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>



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Re: [Emc-users] mister nozzle shape

[Ken Strauss]

> -Original Message-
> From: Gene Heskett [mailto:ghesk...@shentel.net]
> Sent: Friday, March 22, 2019 10:34 PM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] mister nozzle shape
>
> On Friday 22 March 2019 15:17:43 Ken Strauss wrote:
>
> > > -Original Message-
> > > From: Gene Heskett [mailto:ghesk...@shentel.net]
> > > Sent: Friday, March 22, 2019 1:52 PM
> > > To: emc-users@lists.sourceforge.net
> > > Subject: Re: [Emc-users] mister nozzle shape
> > >
> > > On Friday 22 March 2019 13:07:16 Les Newell wrote:
> > > > Hi Gene,
> > > >
> > > > > And you lose a lot more air thru the poorly molded flex joints,
> > > > > probably 5x what comes out the nozzle.
> > > > > And I've been cogitating on how to restrict the fluid flow, so
> > > > > haven't made any chips yet.
> > > >
> > > > Considering the price of these coolant units
> > > > <https://www.ebay.co.uk/itm/Mist-Coolant-Lubrication-Spray-System-
> > > >for- CNC-8mm-Pipe-Lathe-Mill-Drill-Machine/262805869835>
> > >
> > > neither ships to the states.
> >
> > Try
> > https://www.banggood.com/OD-2mm-x-1_6mm-ID-304-Stainless-Steel-
> Capilla
> >ry-Tub e-Length-500mm-Stainless-Pipe-p-1035176.html
> >
> Way too big, Ken.  Thanks.

It is the same size as that recommended by Les (2mm OD, 1.6mm ID).




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Re: [Emc-users] mister nozzle shape

[Gene Heskett]

On Friday 22 March 2019 15:17:43 Ken Strauss wrote:

> > -Original Message-
> > From: Gene Heskett [mailto:ghesk...@shentel.net]
> > Sent: Friday, March 22, 2019 1:52 PM
> > To: emc-users@lists.sourceforge.net
> > Subject: Re: [Emc-users] mister nozzle shape
> >
> > On Friday 22 March 2019 13:07:16 Les Newell wrote:
> > > Hi Gene,
> > >
> > > > And you lose a lot more air thru the poorly molded flex joints,
> > > > probably 5x what comes out the nozzle.
> > > > And I've been cogitating on how to restrict the fluid flow, so
> > > > haven't made any chips yet.
> > >
> > > Considering the price of these coolant units
> > > <https://www.ebay.co.uk/itm/Mist-Coolant-Lubrication-Spray-System-
> > >for- CNC-8mm-Pipe-Lathe-Mill-Drill-Machine/262805869835>
> >
> > neither ships to the states.
>
> Try
> https://www.banggood.com/OD-2mm-x-1_6mm-ID-304-Stainless-Steel-Capilla
>ry-Tub e-Length-500mm-Stainless-Pipe-p-1035176.html
>
Way too big, Ken.  Thanks.
>
>
>
>
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>



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Re: [Emc-users] mister nozzle shape

[Gene Heskett]

On Friday 22 March 2019 14:41:33 Les Newell wrote:

> > neither ships to the states.
>
> Sure they do
> lant-Lubrication-Spray-System-Unit/283340566564>
> be-1-6-2-3-4-10mm-OD-250mm-Length/222945548060>
>
> Les

Not from the previously posted links, Less.  And its a bit late, the 
plumbing is complete but not tested. I drilled into the side of the 
mounting block to borrow the pop bottle air, setting a piece of 1/8" OD 
brass pipe into the hole with some super glue. And found when I found my 
stock of model makers brass tubing, that I had a foot of 1/16" OD which 
will make the needed flow restriction so thats now between the pickup in 
the bottle, and the little fluid line, taped down on top of the gantry 
frame with enough of the 1/8" ID line to allow X to move full travel. 
It'll get tested when the superglue is hard. Probably could right now, 
its had around 3 hours to cure.

Hilitchi supplied the coke lid fittings, inserted into a puddle of gell 
glue from the inside of the coke lid. The only problem is a lack of a 
broom clip to grab the lid with to keep the coke bottle from jiggling 
loose as the gantry moves, there are none of those broom clip puppies 
for sale in the county. Walmart folks weren't sure they even knew what 
they were! Sigh...  Might have to rig a miniature bungee cord to hold 
it.

Yeah, go work the air hose onto the brass pipe & test it right about now.

Nope, a foot of 1/16 inch od brass pipe is still about 40x too much 
liquid. Drained 3 ounces out of the coke bottle in around 2 minutes and 
would have washed the workpiece clean. Even turned down to about 5 psi, 
huge slobbery drops, not a spray at all. At 20 psig, about the right 
amount of atomization but aimed straight out, it only sagged about 4" in 
3 feet, way too strong. So I just bought some more even smaller stuffs
, still cheaper than a quality 
needle valve. But I am getting frustrated trying to find the stuff to 
make an idea actually work. Next would be a spring loaded blowoff to 
limit bottle pressure, at risk of losing more air. In which case I'll  
put this small bore in series going to the bottle to limit the air flow.

Some of Rube Goldbergs patents will have nothing on me...

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 



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Re: [Emc-users] mister nozzle shape

[Gene Heskett]

On Friday 22 March 2019 14:15:55 andy pugh wrote:

> On Fri, 22 Mar 2019 at 17:46, Gene Heskett  
wrote:
> > > Try this: https://a360.co/2JwQgNR
> >
> > crashed FF, https library too old and disabled I think.
>
> Works fine on a Stretch LiveCD install running on a VM on my Mac. (and
> if anything should crash)

We have a LiveCD for linuxcnc, based on stretch?  Where are you hiding 
it?

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 



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Re: [Emc-users] mister nozzle shape

[Gene Heskett]

On Friday 22 March 2019 14:04:48 Roland Jollivet wrote:

> On Fri, 22 Mar 2019 at 20:02, Gene Heskett  
wrote:
> > On Friday 22 March 2019 13:47:01 Roland Jollivet wrote:
> > > On Fri, 22 Mar 2019 at 19:31, Gene Heskett 
> >
> > wrote:
> > > > On Friday 22 March 2019 12:24:55 andy pugh wrote:
> > > > > On Fri, 22 Mar 2019 at 16:15, Gene Heskett
> > > > > 
> > > >
> > > > wrote:
> > > > > > Lack of the ability to bore very fine threads below
> > > > > > nominally 10mm discourages me from attempting a needle valve
> > > > > > design
> > >
> > > Why not just mist using an atomising nozzle, much like they do
> > > outside restaurants on muggy days;
> > > https://www.aqualitywater.com/about-us
> > > (see the first drop-down, 'mist cooling' to see nozzles and price
> > > of.)
> > >
> > > While these use high pressure pumps, I'm sure you could just
> > > pressurise your system by using the water mains pressure.
> > > Sometimes there's a hole in the hosepipe and you get a beautiful
> > > fine mist coming off, so 4bar is plenty pressure to get a mist.
> > >
> > > Using air simply adds a bulk volume that has to go somewhere, and
> > > compressed air is expensive.
> >
> > I think the evaporative cooling of carrying a cold liquid in a lot
> > of air to help it evaporate is part of the theory.  So the air is a
> > requirement of sorts.  I think thats the reasoning at least.
>
> Here's the 'hose-pipe' version.
> http://www.bigfogg.com/product411.html
>
> I really don't think you need compressed air..
>
For that, no.
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 



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Re: [Emc-users] mister nozzle shape

[Ken Strauss]

> -Original Message-
> From: Gene Heskett [mailto:ghesk...@shentel.net]
> Sent: Friday, March 22, 2019 1:52 PM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] mister nozzle shape
>
> On Friday 22 March 2019 13:07:16 Les Newell wrote:
>
> > Hi Gene,
> >
> > > And you lose a lot more air thru the poorly molded flex joints,
> > > probably 5x what comes out the nozzle.
> > > And I've been cogitating on how to restrict the fluid flow, so
> > > haven't made any chips yet.
> >
> > Considering the price of these coolant units
> > <https://www.ebay.co.uk/itm/Mist-Coolant-Lubrication-Spray-System-for-
> >CNC-8mm-Pipe-Lathe-Mill-Drill-Machine/262805869835>
>
> neither ships to the states.

Or
https://www.ebay.ca/itm/10PCS-304-Stainless-Steel-Capillary-Silver-Tube-Bar-
OD-2mm-x-1-6mm-Length-250mm/182683602266





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Re: [Emc-users] mister nozzle shape

[Ken Strauss]

> -Original Message-
> From: Gene Heskett [mailto:ghesk...@shentel.net]
> Sent: Friday, March 22, 2019 1:52 PM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] mister nozzle shape
>
> On Friday 22 March 2019 13:07:16 Les Newell wrote:
>
> > Hi Gene,
> >
> > > And you lose a lot more air thru the poorly molded flex joints,
> > > probably 5x what comes out the nozzle.
> > > And I've been cogitating on how to restrict the fluid flow, so
> > > haven't made any chips yet.
> >
> > Considering the price of these coolant units
> > <https://www.ebay.co.uk/itm/Mist-Coolant-Lubrication-Spray-System-for-
> >CNC-8mm-Pipe-Lathe-Mill-Drill-Machine/262805869835>
>
> neither ships to the states.
>

Try
https://www.banggood.com/OD-2mm-x-1_6mm-ID-304-Stainless-Steel-Capillary-Tub
e-Length-500mm-Stainless-Pipe-p-1035176.html





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Re: [Emc-users] mister nozzle shape

[Les Newell]

neither ships to the states.
Sure they do 




Les


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Re: [Emc-users] mister nozzle shape

[andy pugh]

On Fri, 22 Mar 2019 at 17:46, Gene Heskett  wrote:

> > Try this: https://a360.co/2JwQgNR
>
> crashed FF, https library too old and disabled I think.

Works fine on a Stretch LiveCD install running on a VM on my Mac. (and
if anything should crash)

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916


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Re: [Emc-users] mister nozzle shape

[Gene Heskett]

On Friday 22 March 2019 13:47:01 Roland Jollivet wrote:

> On Fri, 22 Mar 2019 at 19:31, Gene Heskett  
wrote:
> > On Friday 22 March 2019 12:24:55 andy pugh wrote:
> > > On Fri, 22 Mar 2019 at 16:15, Gene Heskett 
> >
> > wrote:
> > > > Lack of the ability to bore very fine threads below
> > > > nominally 10mm discourages me from attempting a needle valve
> > > > design
>
> Why not just mist using an atomising nozzle, much like they do outside
> restaurants on muggy days;
> https://www.aqualitywater.com/about-us
> (see the first drop-down, 'mist cooling' to see nozzles and price of.)
>
> While these use high pressure pumps, I'm sure you could just
> pressurise your system by using the water mains pressure.
> Sometimes there's a hole in the hosepipe and you get a beautiful fine
> mist coming off, so 4bar is plenty pressure to get a mist.
>
> Using air simply adds a bulk volume that has to go somewhere, and
> compressed air is expensive.
>
I think the evaporative cooling of carrying a cold liquid in a lot of air 
to help it evaporate is part of the theory.  So the air is a requirement 
of sorts.  I think thats the reasoning at least.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 



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Re: [Emc-users] mister nozzle shape

[Gene Heskett]

On Friday 22 March 2019 13:07:16 Les Newell wrote:

> Hi Gene,
>
> > And you lose a lot more air thru the poorly molded flex joints,
> > probably 5x what comes out the nozzle.
> > And I've been cogitating on how to restrict the fluid flow, so
> > haven't made any chips yet.
>
> Considering the price of these coolant units
> CNC-8mm-Pipe-Lathe-Mill-Drill-Machine/262805869835> is it worth messing
> around with what you have? They have the coaxial pipe design so the
> joints aren't under pressure. The needle valves are a bit coarse but
> they do work. They are also pretty easy to convert to my long nozzle
> design with some 2mm stainless tube
> e-Bar-OD-2mm-x-1-6mm-ID-Length-500mm/264241354587>.
>
> I have some misters that are very similar to yours. They are sitting
> on a shelf waiting to be used for spare parts.
>
> > That way any particulates that get thru the sintered bronze filter
> > on the end of the feed line in the coke bottle will hopefully not be
> > so coarse as to block off the pinched area, AND theres nothing to
> > corrode over time.
>
> I haven't had a lot of luck with pinching pipe to regulate low flow
> rates. Your mileage may very.
>
> The outer air pipe in the misters I linked above is pretty simple. It
> is just a piece of nylon pipe that is a close fit in the flex joints
> and swaged out at each end to form a seal. If you can find some pipe
> that fits inside your mister flex joints you could probably do
> something similar.
>s
>
These are already coaxial.  Its the air that leaks like a spaghetti 
strainer. Not a bad design, but bblb manufacture for sure.
>
>
>
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 



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Re: [Emc-users] mister nozzle shape

[Gene Heskett]

On Friday 22 March 2019 13:07:16 Les Newell wrote:

> Hi Gene,
>
> > And you lose a lot more air thru the poorly molded flex joints,
> > probably 5x what comes out the nozzle.
> > And I've been cogitating on how to restrict the fluid flow, so
> > haven't made any chips yet.
>
> Considering the price of these coolant units
> CNC-8mm-Pipe-Lathe-Mill-Drill-Machine/262805869835> 

neither ships to the states.

>is it worth messing 
> around with what you have? They have the coaxial pipe design so the
> joints aren't under pressure. The needle valves are a bit coarse but
> they do work. They are also pretty easy to convert to my long nozzle
> design with some 2mm stainless tube
> e-Bar-OD-2mm-x-1-6mm-ID-Length-500mm/264241354587>.
>
> I have some misters that are very similar to yours. They are sitting
> on a shelf waiting to be used for spare parts.
>
> > That way any particulates that get thru the sintered bronze filter
> > on the end of the feed line in the coke bottle will hopefully not be
> > so coarse as to block off the pinched area, AND theres nothing to
> > corrode over time.
>
> I haven't had a lot of luck with pinching pipe to regulate low flow
> rates. Your mileage may very.
>
> The outer air pipe in the misters I linked above is pretty simple. It
> is just a piece of nylon pipe that is a close fit in the flex joints
> and swaged out at each end to form a seal. If you can find some pipe
> that fits inside your mister flex joints you could probably do
> something similar.
>
> Les
>
>
>
>
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 



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Re: [Emc-users] mister nozzle shape

[Gene Heskett]

On Friday 22 March 2019 12:47:45 andy pugh wrote:

> On Fri, 22 Mar 2019 at 16:43, Gene Heskett  
wrote:
> > Do we have anything that can "view" this .step file? pycam struck
> > out.
>
> Try this: https://a360.co/2JwQgNR

crashed FF, https library too old and disabled I think.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 



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Re: [Emc-users] mister nozzle shape

[Gene Heskett]

On Friday 22 March 2019 12:28:46 Ken Strauss wrote:

> > -Original Message-
> > From: Gene Heskett [mailto:ghesk...@shentel.net]
> > Sent: Friday, March 22, 2019 12:14 PM
> > To: emc-users@lists.sourceforge.net
> > Subject: Re: [Emc-users] mister nozzle shape
> >
> > And I've been cogitating on how to restrict the fluid flow, so
> > haven't made any chips yet.  Lack of the ability to bore very fine
> > threads below nominally 10mm discourages me from attempting a needle
> > valve design in some 1/2" thick brass bar I have is driving me
> > toward a pinch the hose idea since the hose is so small anyway, I'm
> > thinking of drilling and tapping into the motor mount, a couple
> > 3mm.7 tapped holes 8mm or so apart, and making a flat piece with
> > matching clearance holes, clamping that teeny hose between them and
> > drawing it down with hex head cap screws to pinch it down to a red
> > hair. Pressurizing the coke bottle takes care of priming the system
> > and I can drill into the mount body to get that air easily enough.
> > It will bleed back out of the bottle, and I can extend the inner
> > nozzle to deliver what liquid does get thru the pinched section to
> > roughly the middle of the annular air running at maybe 10 psi.
> >
> > That way any particulates that get thru the sintered bronze filter
> > on the end of the feed line in the coke bottle will hopefully not be
> > so coarse as to block off the pinched area, AND theres nothing to
> > corrode over time. Might have a cold flow problem with the hose,
> > requiring a pinch adjustment occasionally, but thats to be fiddled
> > with when its encountered.
> >
> > Anybody see any showstoppers??
>
> Is there some reason not to use a commercial pneumatic needle valve?
> Perhaps not the best price nor quality but something like:
> https://www.amazon.com/Clippard-PQ-FV04-Plastic-Control-Tubing/dp/B01A
>63TGA0/ or
> https://www.amazon.com/Pneumatic-Connect-Fitting-Control-Degree/dp/B07
>L9ZGRTS/ They are available for various tubing sizes and NPT sizes.

Either one would do the job at $16 copy. In looking for brass versions, I 
found quite a few, nearly all at $70 and up to nearly $300 for higher 
pressure stuffs.  And if I had some brass stock for the screw I could 
make it, but steel screws would just rust and clog.

So I changed to a pinch the hose idea, which I'll do this afternoon. I 
can do that with a 1/2x3/4 piece of 1/8 alu panel scrap and a pair of 
3mm.7 cap screws I already have a box of. Probably cold flow problems 
with the plastic hose, but no long term corrosion to deal with.
>
>
>
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-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
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Re: [Emc-users] mister nozzle shape

[Gene Heskett]

On Friday 22 March 2019 12:24:55 andy pugh wrote:

> On Fri, 22 Mar 2019 at 16:15, Gene Heskett  
wrote:
> > Lack of the ability to bore very fine threads below
> > nominally 10mm discourages me from attempting a needle valve design
>
> Why do you need to bore? Just drill and tap.

I could but I'd like finer threads than 12-32. But my boreing bar for 
tapping needs a minimum sized hole, at least 10mm. And no brass screws 
of that size on hand in Lewis County anyway. Steel would rust and plug 
things up.

So I've changed my mind, I think I'll make a hose crusher, nothing to 
corrode that way. and I can do that in an hour or less with 2 3mm.7 
screws and a piece of 1/8" alu panel.

I've rx'd some din rails, so I can fasten down some of the relays I've 
used so far yet this afternoon as soon as I find a round tuit. Got the 
missus fed and coffee'd so I can dissappear for 2-3 hours.

The guy in hongkong is going to ship the switches again so maybe I'll 
eventutally have some home switches. He's starving though, 100 
miniature, 4mm sq, 2.5 mm thick waterproof pushbuttons for 2.42 USD with 
free ship, couldn't pass it up. I used a similar switch for X home on 
TLM, only knocked it loose once in about 5 years when chips got piled up 
in front of it.  Should work ok on this thing.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 



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Re: [Emc-users] mister nozzle shape

[Les Newell]

Hi Gene,


And you lose a lot more air thru the poorly molded flex joints, probably
5x what comes out the nozzle.
And I've been cogitating on how to restrict the fluid flow, so haven't
made any chips yet.


Considering the price of these coolant units 
 
is it worth messing around with what you have? They have the coaxial 
pipe design so the joints aren't under pressure. The needle valves are a 
bit coarse but they do work. They are also pretty easy to convert to my 
long nozzle design with some 2mm stainless tube 
.


I have some misters that are very similar to yours. They are sitting on 
a shelf waiting to be used for spare parts.



That way any particulates that get thru the sintered bronze filter on the
end of the feed line in the coke bottle will hopefully not be so coarse
as to block off the pinched area, AND theres nothing to corrode over
time.
I haven't had a lot of luck with pinching pipe to regulate low flow 
rates. Your mileage may very.


The outer air pipe in the misters I linked above is pretty simple. It is 
just a piece of nylon pipe that is a close fit in the flex joints and 
swaged out at each end to form a seal. If you can find some pipe that 
fits inside your mister flex joints you could probably do something similar.


Les




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Re: [Emc-users] mister nozzle shape

[andy pugh]

On Fri, 22 Mar 2019 at 16:43, Gene Heskett  wrote:

> Do we have anything that can "view" this .step file? pycam struck out.

Try this: https://a360.co/2JwQgNR

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916


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Re: [Emc-users] mister nozzle shape

[Gene Heskett]

On Friday 22 March 2019 10:06:24 Les Newell wrote:

> That's basically the Fogbuster design. It is a design that works well
> but uses quite a bit of air.  You lose most of the energy in the air
> by regulating it down to a fairly low pressure before you feed it into
> the tube.
> That's why I went for my extended nozzle design that runs on ~100psi
> at the nozzle, with a very small annular jet. A small amount of air
> leaves the jet at high velocity and mixes with the surrounding air to
> produce a lower velocity column of air at a high flow rate. The
> extended nozzle injects coolant into the column at a point where it's
> velocity has fallen low enough that it can't atomize the coolant.
>
> By the way Gene, the Chinese misters I linked to previously to have
> two tubes to the nozzle, one for air and one for coolant, so you don't
> get any leakage at the lock line joints. That's how I manage to run
> mine at high pressure.
>
> Les
>
> On 21/03/2019 19:43, tom-...@bgp.nu wrote:
> > FWIW, here are models of the No Mister Misty:
> >
> > https://bgp.nu/~tom/pub/NoMisterMisty-Assy.f3d. (Fusion 360
> > Assembly) https://bgp.nu/~tom/pub/NoMisterMisty-Assy.zip (Solid
> > Works Assembly) https://bgp.nu/~tom/pub/NoMisterMisty-Assy.step
> > (.stp or step file)
> >
Do we have anything that can "view" this .step file? pycam struck out.

Thanks.
> > -Tom
>
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Cheers, Gene Heskett
-- 
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 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
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Re: [Emc-users] mister nozzle shape

[Ken Strauss]

> -Original Message-
> From: Gene Heskett [mailto:ghesk...@shentel.net]
> Sent: Friday, March 22, 2019 12:14 PM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] mister nozzle shape
>
> And I've been cogitating on how to restrict the fluid flow, so haven't
> made any chips yet.  Lack of the ability to bore very fine threads below
> nominally 10mm discourages me from attempting a needle valve design in
> some 1/2" thick brass bar I have is driving me toward a pinch the hose
> idea since the hose is so small anyway, I'm thinking of drilling and
> tapping into the motor mount, a couple 3mm.7 tapped holes 8mm or so
> apart, and making a flat piece with matching clearance holes, clamping
> that teeny hose between them and drawing it down with hex head cap
> screws to pinch it down to a red hair. Pressurizing the coke bottle
> takes care of priming the system and I can drill into the mount body to
> get that air easily enough. It will bleed back out of the bottle, and I
> can extend the inner nozzle to deliver what liquid does get thru the
> pinched section to roughly the middle of the annular air running at
> maybe 10 psi.
>
> That way any particulates that get thru the sintered bronze filter on the
> end of the feed line in the coke bottle will hopefully not be so coarse
> as to block off the pinched area, AND theres nothing to corrode over
> time. Might have a cold flow problem with the hose, requiring a pinch
> adjustment occasionally, but thats to be fiddled with when its
> encountered.
>
> Anybody see any showstoppers??
>

Is there some reason not to use a commercial pneumatic needle valve? Perhaps 
not the best price nor quality but something like:
https://www.amazon.com/Clippard-PQ-FV04-Plastic-Control-Tubing/dp/B01A63TGA0/
or
https://www.amazon.com/Pneumatic-Connect-Fitting-Control-Degree/dp/B07L9ZGRTS/
They are available for various tubing sizes and NPT sizes.




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Re: [Emc-users] mister nozzle shape

[andy pugh]

On Fri, 22 Mar 2019 at 16:15, Gene Heskett  wrote:

> Lack of the ability to bore very fine threads below
> nominally 10mm discourages me from attempting a needle valve design

Why do you need to bore? Just drill and tap.

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916


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Re: [Emc-users] mister nozzle shape

[Gene Heskett]

On Friday 22 March 2019 10:06:24 Les Newell wrote:

> That's basically the Fogbuster design. It is a design that works well
> but uses quite a bit of air.  You lose most of the energy in the air
> by regulating it down to a fairly low pressure before you feed it into
> the tube.
And you lose a lot more air thru the poorly molded flex joints, probably 
5x what comes out the nozzle.

> That's why I went for my extended nozzle design that runs on ~100psi
> at the nozzle, with a very small annular jet. A small amount of air
> leaves the jet at high velocity and mixes with the surrounding air to
> produce a lower velocity column of air at a high flow rate. The
> extended nozzle injects coolant into the column at a point where it's
> velocity has fallen low enough that it can't atomize the coolant.

And I've been cogitating on how to restrict the fluid flow, so haven't 
made any chips yet.  Lack of the ability to bore very fine threads below 
nominally 10mm discourages me from attempting a needle valve design in 
some 1/2" thick brass bar I have is driving me toward a pinch the hose 
idea since the hose is so small anyway, I'm thinking of drilling and 
tapping into the motor mount, a couple 3mm.7 tapped holes 8mm or so 
apart, and making a flat piece with matching clearance holes, clamping 
that teeny hose between them and drawing it down with hex head cap 
screws to pinch it down to a red hair. Pressurizing the coke bottle 
takes care of priming the system and I can drill into the mount body to 
get that air easily enough. It will bleed back out of the bottle, and I 
can extend the inner nozzle to deliver what liquid does get thru the 
pinched section to roughly the middle of the annular air running at 
maybe 10 psi.

That way any particulates that get thru the sintered bronze filter on the 
end of the feed line in the coke bottle will hopefully not be so coarse 
as to block off the pinched area, AND theres nothing to corrode over 
time. Might have a cold flow problem with the hose, requiring a pinch 
adjustment occasionally, but thats to be fiddled with when its 
encountered.

Anybody see any showstoppers??

> By the way Gene, the Chinese misters I linked to previously to have
> two tubes to the nozzle, one for air and one for coolant, so you don't
> get any leakage at the lock line joints. That's how I manage to run
> mine at high pressure.

Same here Les, now if we could just get the segmented outer line to hold 
air. I'm losing 90% of my input air blowing out the sides of the segment 
joints. Very poorly molded stuff. With a 2hp direct drive AC, its 
running 75% of the time at 15 psig. I'll burn it up sure as God made 
little green apples. A 10% duty would be my personal target. Giving it 
time to cool the cylinder head. Or perhaps put that 6" rotron I bought 
to put on the vfd, on the compressor instead? Its quiet enough to leave 
it run full time, and the compressor would last a LOT longer with active 
cooling full time.

The vfd doesn't seem to heat enough to need a fan other than the 3.5" in 
the box. I left it running at the 7i76D min, set at about 2400 rpm, all 
night, nothing warm enough to worry about, not even the water the next 
day. I can set that slower and might but theres only a small torque at 
that speed anyway.

Thanks Les, I appreciate the experience shared.
>
> Les
>
> On 21/03/2019 19:43, tom-...@bgp.nu wrote:
> > FWIW, here are models of the No Mister Misty:
> >
> > https://bgp.nu/~tom/pub/NoMisterMisty-Assy.f3d. (Fusion 360
> > Assembly) https://bgp.nu/~tom/pub/NoMisterMisty-Assy.zip (Solid
> > Works Assembly) https://bgp.nu/~tom/pub/NoMisterMisty-Assy.step
> > (.stp or step file)
> >
> > -Tom
>
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Cheers, Gene Heskett
-- 
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 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 



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Re: [Emc-users] mister nozzle shape

[Les Newell]

That's basically the Fogbuster design. It is a design that works well 
but uses quite a bit of air.  You lose most of the energy in the air by 
regulating it down to a fairly low pressure before you feed it into the 
tube.
That's why I went for my extended nozzle design that runs on ~100psi at 
the nozzle, with a very small annular jet. A small amount of air leaves 
the jet at high velocity and mixes with the surrounding air to produce a 
lower velocity column of air at a high flow rate. The extended nozzle 
injects coolant into the column at a point where it's velocity has 
fallen low enough that it can't atomize the coolant.


By the way Gene, the Chinese misters I linked to previously to have two 
tubes to the nozzle, one for air and one for coolant, so you don't get 
any leakage at the lock line joints. That's how I manage to run mine at 
high pressure.


Les

On 21/03/2019 19:43, tom-...@bgp.nu wrote:

FWIW, here are models of the No Mister Misty:

https://bgp.nu/~tom/pub/NoMisterMisty-Assy.f3d. (Fusion 360 Assembly)
https://bgp.nu/~tom/pub/NoMisterMisty-Assy.zip (Solid Works Assembly)
https://bgp.nu/~tom/pub/NoMisterMisty-Assy.step (.stp or step file)

-Tom





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Re: [Emc-users] mister nozzle shape

[tom-emc]

FWIW, here are models of the No Mister Misty:

https://bgp.nu/~tom/pub/NoMisterMisty-Assy.f3d. (Fusion 360 Assembly)
https://bgp.nu/~tom/pub/NoMisterMisty-Assy.zip (Solid Works Assembly)
https://bgp.nu/~tom/pub/NoMisterMisty-Assy.step (.stp or step file)

-Tom



> On Mar 21, 2019, at 2:11 PM, Gene Heskett  wrote:
> 
> On Thursday 21 March 2019 11:09:39 Tom Easterday wrote:
> 
>> We built “No Mister Misty” for a bunch of machines around our shop and
>> they work great.  Traditional misters force coolant/lubricant under
>> pressure out the end of a nozzle which atomizes the coolant.  Most of
>> that goes into the air and after time your shop will be filled with a
>> mist of coolant for you to inhale.  Our (not) mister uses a needle
>> valve from McMaster that is epoxied into a machined brass block and
>> allows you feed coolant through the valve which is then injected into
>> the side of a stream of low pressure air, both coolant and air stream
>> are at the same pressure.  There is then a tube 4-6” long with a small
>> (flat faced) nozzle on the end with a 0.040” hole in it  That way the
>> drops of lubricant are NOT atomized, but are carried out in tiny
>> droplets in the air stream.  The vast majority ends up where you aim
>> the nozzle and not in the air.  You can regulate the amount of coolant
>> quite precisely with the needle valve.  They create very little mist.
>> 
>> -Tom
> Well, now having attempted to take it apart and inspect the needle valve, 
> it turns out that the valve actually regulates the air flow but to a 
> very minor degree as it has four more nominally #69 holes bypassing the 
> needle seat even when its closed.
> 
> It also turns out that the fluid hose simply sails on by the mounting 
> block as a continuous hose all the way from the tank to the nozzle, 
> which is threaded on its OD so that the rear brass part screws on and 
> off the end of the leaky plastic, which in turn controls the spacing of 
> the jet and the adjustable end brass nozzle and that maximum suction 
> lift is achieved when the internal/rear brass part connected is loosened 
> at the gland, and it can then be reassembled one or perhaps two threads 
> farther out, bringing the end of the nozzle approximately flush with the 
> end of the outer brass fitting, and it  then develops enough suction to 
> prime the suction line and make spray at about 20 psig, which once 
> started, still works down to about 13 psig. But even then,the segmented 
> air hose is leaking enough to blow out all all 85 candles on my next 
> birthday cake.  Is this stuff all that poorly molded?
> 
> The real bottom line is that in addition to putting balanced 
> pressure /in/ the fluid container, there is not _any_ facility to 
> control the fluid flow in the whole thing.  So after I check the mailbox 
> as I just heard the teeny white box truck go by, I'll go see if I can 
> find a needle valve to put in the fluid line an inch or so from the 
> mounting block else it will use up an 8 oz coke bottle of mix in about 2 
> minutes, drowning the work and soaking the spoil board. It might even be 
> something I'll have to make, and while needles are hard to make, I do 
> have drills down to #80.  And I know how to do primitive EDM, which 
> makes me think I might be able to do the needle and its seating orifice 
> in one shot.
> 
> This is turning into one of the higher numbered Excedrin headaches.
> 
> But I'd  better get to it...
>> 
>> On Mar 21, 2019, at 8:36 AM, Ken Strauss  wrote:
>>>> -Original Message-
>>>> From: TJoseph Powderly [mailto:tjt...@gmail.com]
>>>> Sent: Thursday, March 21, 2019 7:32 AM
>>>> To: Enhanced Machine Controller (EMC)
>>>> Subject: Re: [Emc-users] mister nozzle shape
>>>> 
>>>> a quick google reminded me why this was familair
>>>> try googling 'spray nozzle'
>>>> i got
>>>> https://en.wikipedia.org/wiki/Spray_nozzle
>>>> and it showed me that the flat surface exit made NO atomization
>>>> thats not what you want, sorry
>>>> ( i was trying to achieve the jumping water effect seen in many
>>>> fountains and that flat exit was great for the hot dog of water
>>>> effect ) if you want the fluid stream broken into tiny droplets ,
>>>> the web page lists a lot of geometries to try
>>>> tomp
>>>> 
>>>> On Thu, Mar 21, 2019 at 10:50 AM Gene Heskett
>>>> 
>>>> 
>>>> wrote:
>>>>>> On Wednesday 20 March 2019 21:29:19 TJoseph Powderly wrote:
>>>>>> 
>>>>

Re: [Emc-users] mister nozzle shape

[Gene Heskett]

On Thursday 21 March 2019 11:09:39 Tom Easterday wrote:

> We built “No Mister Misty” for a bunch of machines around our shop and
> they work great.  Traditional misters force coolant/lubricant under
> pressure out the end of a nozzle which atomizes the coolant.  Most of
> that goes into the air and after time your shop will be filled with a
> mist of coolant for you to inhale.  Our (not) mister uses a needle
> valve from McMaster that is epoxied into a machined brass block and
> allows you feed coolant through the valve which is then injected into
> the side of a stream of low pressure air, both coolant and air stream
> are at the same pressure.  There is then a tube 4-6” long with a small
> (flat faced) nozzle on the end with a 0.040” hole in it  That way the
> drops of lubricant are NOT atomized, but are carried out in tiny
> droplets in the air stream.  The vast majority ends up where you aim
> the nozzle and not in the air.  You can regulate the amount of coolant
> quite precisely with the needle valve.  They create very little mist.
>
> -Tom
Well, now having attempted to take it apart and inspect the needle valve, 
it turns out that the valve actually regulates the air flow but to a 
very minor degree as it has four more nominally #69 holes bypassing the 
needle seat even when its closed.

It also turns out that the fluid hose simply sails on by the mounting 
block as a continuous hose all the way from the tank to the nozzle, 
which is threaded on its OD so that the rear brass part screws on and 
off the end of the leaky plastic, which in turn controls the spacing of 
the jet and the adjustable end brass nozzle and that maximum suction 
lift is achieved when the internal/rear brass part connected is loosened 
at the gland, and it can then be reassembled one or perhaps two threads 
farther out, bringing the end of the nozzle approximately flush with the 
end of the outer brass fitting, and it  then develops enough suction to 
prime the suction line and make spray at about 20 psig, which once 
started, still works down to about 13 psig. But even then,the segmented 
air hose is leaking enough to blow out all all 85 candles on my next 
birthday cake.  Is this stuff all that poorly molded?

The real bottom line is that in addition to putting balanced 
pressure /in/ the fluid container, there is not _any_ facility to 
control the fluid flow in the whole thing.  So after I check the mailbox 
as I just heard the teeny white box truck go by, I'll go see if I can 
find a needle valve to put in the fluid line an inch or so from the 
mounting block else it will use up an 8 oz coke bottle of mix in about 2 
minutes, drowning the work and soaking the spoil board. It might even be 
something I'll have to make, and while needles are hard to make, I do 
have drills down to #80.  And I know how to do primitive EDM, which 
makes me think I might be able to do the needle and its seating orifice 
in one shot.

This is turning into one of the higher numbered Excedrin headaches.

But I'd  better get to it...
>
> On Mar 21, 2019, at 8:36 AM, Ken Strauss  wrote:
> >> -Original Message-
> >> From: TJoseph Powderly [mailto:tjt...@gmail.com]
> >> Sent: Thursday, March 21, 2019 7:32 AM
> >> To: Enhanced Machine Controller (EMC)
> >> Subject: Re: [Emc-users] mister nozzle shape
> >>
> >> a quick google reminded me why this was familair
> >> try googling 'spray nozzle'
> >> i got
> >> https://en.wikipedia.org/wiki/Spray_nozzle
> >> and it showed me that the flat surface exit made NO atomization
> >> thats not what you want, sorry
> >> ( i was trying to achieve the jumping water effect seen in many
> >> fountains and that flat exit was great for the hot dog of water
> >> effect ) if you want the fluid stream broken into tiny droplets ,
> >> the web page lists a lot of geometries to try
> >> tomp
> >>
> >> On Thu, Mar 21, 2019 at 10:50 AM Gene Heskett
> >> 
> >>
> >> wrote:
> >>>> On Wednesday 20 March 2019 21:29:19 TJoseph Powderly wrote:
> >>>>
> >>>> Hello Mr Nozzle shape
> >>>
> >>> Did not get any useable hits on this side of the pond. URL?
> >>>
> >>> Cheers, Gene Heskett
> >
> > Thanks for the link. Sometimes Googling for the obvious terms gives
> > the best results!
> >
> >
> >
> >
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>



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Re: [Emc-users] mister nozzle shape

[MC Cason via Emc-users]

Gene,

  Google "diy fog buster".  There are lots of homemade systems that do 
exactly what you want, for around a $50.00 bill.




---Mark

On 3/21/19 11:00 AM, Gene Heskett wrote:

On Thursday 21 March 2019 07:31:44 TJoseph Powderly wrote:


a quick google reminded me why this was familair
try googling 'spray nozzle'
i got
https://en.wikipedia.org/wiki/Spray_nozzle
and it showed me that the flat surface exit made NO atomization
thats not what you want, sorry

The internal nozzle, delivering the liquid is a flat faced rod of about
1/8" (3.15mm) diameter, with perhaps a #66 drill hole for the fluid exit
in the center.  The covering and adjustable brass tip which can be
screwed in and out to control the clearance between the sharp shoulder
of the liquid jet, and the actual orifice the spray comes out of, is as
a first guess too large to generate the air velocity needed for a good
siphon effect. The siphon effect, to get a 6" lift for a fluid that is
very close to plain water, takes around 50 psig. At that psig, the joint
leakage air volume comeing out between the pieces that make up the
steerable hose far exceeds the amount of air actually exiting the nozzle
itself. The air conpresser will not long tolerate a continuous run as
its a direct drive design, needing much more cooldown time than run
time.

So what I'll try next is to pressurize the liquid container, and restrict
the liquid flow, which should give me relatively coarse, fog free
droplets at 10 psig. The problem would appear to be both the so-called
needle valve is not a true needle, and poor machining resulting in a far
from complete shut off.  But I've not removed the stem of this valve
yet, which also has a packing gland collar, for inspection and possible
modification.  So since the missus likes coke, (I, as a diabetic,
officially hate the stuff) and I keep a 6 pack of 8oz bottles for her
that she has probably forgotten I have, she gets to drink one because I
need the empty. :-)

So thats my next experiment.  Then I think I'll put some switches in my
gcode and move all the interfaces output connectors to the other side of
the box, leaving only the db25's.  Makeing two panels is looking more
and more appetizing.  And since the switches for home and limit are now
about 6 weeks since paypal paid for them, I sent the vendor a "where are
they" message this morning. I have a tracking number, but everytime I
click on it, the estimated delivery is pushed out another 2 weeks with
no other info.  Doesn't smell right from here.

Cheers, Gene Heskett




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Re: [Emc-users] mister nozzle shape

[Gene Heskett]

On Thursday 21 March 2019 07:31:44 TJoseph Powderly wrote:

> a quick google reminded me why this was familair
> try googling 'spray nozzle'
> i got
> https://en.wikipedia.org/wiki/Spray_nozzle
> and it showed me that the flat surface exit made NO atomization
> thats not what you want, sorry

The internal nozzle, delivering the liquid is a flat faced rod of about 
1/8" (3.15mm) diameter, with perhaps a #66 drill hole for the fluid exit 
in the center.  The covering and adjustable brass tip which can be 
screwed in and out to control the clearance between the sharp shoulder 
of the liquid jet, and the actual orifice the spray comes out of, is as 
a first guess too large to generate the air velocity needed for a good 
siphon effect. The siphon effect, to get a 6" lift for a fluid that is 
very close to plain water, takes around 50 psig. At that psig, the joint 
leakage air volume comeing out between the pieces that make up the 
steerable hose far exceeds the amount of air actually exiting the nozzle 
itself. The air conpresser will not long tolerate a continuous run as 
its a direct drive design, needing much more cooldown time than run 
time.

So what I'll try next is to pressurize the liquid container, and restrict 
the liquid flow, which should give me relatively coarse, fog free 
droplets at 10 psig. The problem would appear to be both the so-called 
needle valve is not a true needle, and poor machining resulting in a far 
from complete shut off.  But I've not removed the stem of this valve 
yet, which also has a packing gland collar, for inspection and possible 
modification.  So since the missus likes coke, (I, as a diabetic, 
officially hate the stuff) and I keep a 6 pack of 8oz bottles for her 
that she has probably forgotten I have, she gets to drink one because I 
need the empty. :-)

So thats my next experiment.  Then I think I'll put some switches in my 
gcode and move all the interfaces output connectors to the other side of 
the box, leaving only the db25's.  Makeing two panels is looking more 
and more appetizing.  And since the switches for home and limit are now 
about 6 weeks since paypal paid for them, I sent the vendor a "where are 
they" message this morning. I have a tracking number, but everytime I 
click on it, the estimated delivery is pushed out another 2 weeks with 
no other info.  Doesn't smell right from here.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 



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Re: [Emc-users] mister nozzle shape

[Tom Easterday]

We built “No Mister Misty” for a bunch of machines around our shop and they 
work great.  Traditional misters force coolant/lubricant under pressure out the 
end of a nozzle which atomizes the coolant.  Most of that goes into the air and 
after time your shop will be filled with a mist of coolant for you to inhale.  
Our (not) mister uses a needle valve from McMaster that is epoxied into a 
machined brass block and allows you feed coolant through the valve which is 
then injected into the side of a stream of low pressure air, both coolant and 
air stream are at the same pressure.  There is then a tube 4-6” long with a 
small (flat faced) nozzle on the end with a 0.040” hole in it  That way the 
drops of lubricant are NOT atomized, but are carried out in tiny droplets in 
the air stream.  The vast majority ends up where you aim the nozzle and not in 
the air.  You can regulate the amount of coolant quite precisely with the 
needle valve.  They create very little mist.

-Tom

On Mar 21, 2019, at 8:36 AM, Ken Strauss  wrote:

>> -Original Message-
>> From: TJoseph Powderly [mailto:tjt...@gmail.com]
>> Sent: Thursday, March 21, 2019 7:32 AM
>> To: Enhanced Machine Controller (EMC)
>> Subject: Re: [Emc-users] mister nozzle shape
>> 
>> a quick google reminded me why this was familair
>> try googling 'spray nozzle'
>> i got
>> https://en.wikipedia.org/wiki/Spray_nozzle
>> and it showed me that the flat surface exit made NO atomization
>> thats not what you want, sorry
>> ( i was trying to achieve the jumping water effect seen in many fountains
>> and that flat exit was great for the hot dog of water effect )
>> if you want the fluid stream broken into tiny droplets ,
>> the web page lists a lot of geometries to try
>> tomp
>> 
>> On Thu, Mar 21, 2019 at 10:50 AM Gene Heskett 
>> wrote:
>> 
>>>> On Wednesday 20 March 2019 21:29:19 TJoseph Powderly wrote:
>>>> 
>>>> Hello Mr Nozzle shape
>>> 
>>> Did not get any useable hits on this side of the pond. URL?
>>> 
>>> Cheers, Gene Heskett
> 
> Thanks for the link. Sometimes Googling for the obvious terms gives the best
> results!
> 
> 
> 
> 
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Re: [Emc-users] mister nozzle shape

[Ken Strauss]

> -Original Message-
> From: TJoseph Powderly [mailto:tjt...@gmail.com]
> Sent: Thursday, March 21, 2019 7:32 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] mister nozzle shape
>
> a quick google reminded me why this was familair
> try googling 'spray nozzle'
> i got
> https://en.wikipedia.org/wiki/Spray_nozzle
> and it showed me that the flat surface exit made NO atomization
> thats not what you want, sorry
> ( i was trying to achieve the jumping water effect seen in many fountains
> and that flat exit was great for the hot dog of water effect )
> if you want the fluid stream broken into tiny droplets ,
> the web page lists a lot of geometries to try
> tomp
>
> On Thu, Mar 21, 2019 at 10:50 AM Gene Heskett 
> wrote:
>
> > On Wednesday 20 March 2019 21:29:19 TJoseph Powderly wrote:
> >
> > > Hello Mr Nozzle shape
> >
> > Did not get any useable hits on this side of the pond. URL?
> >
> > Cheers, Gene Heskett

Thanks for the link. Sometimes Googling for the obvious terms gives the best
results!




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Re: [Emc-users] mister nozzle shape

[TJoseph Powderly]

a quick google reminded me why this was familair
try googling 'spray nozzle'
i got
https://en.wikipedia.org/wiki/Spray_nozzle
and it showed me that the flat surface exit made NO atomization
thats not what you want, sorry
( i was trying to achieve the jumping water effect seen in many fountains
and that flat exit was great for the hot dog of water effect )
if you want the fluid stream broken into tiny droplets ,
the web page lists a lot of geometries to try
tomp

On Thu, Mar 21, 2019 at 10:50 AM Gene Heskett  wrote:

> On Wednesday 20 March 2019 21:29:19 TJoseph Powderly wrote:
>
> > Hello Mr Nozzle shape
>
> Did not get any useable hits on this side of the pond. URL?
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> Genes Web page 
>
>
>
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>

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Re: [Emc-users] mister nozzle shape

[Gene Heskett]

On Wednesday 20 March 2019 21:29:19 TJoseph Powderly wrote:

> Hello Mr Nozzle shape

Did not get any useable hits on this side of the pond. URL?

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 



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Re: [Emc-users] mister nozzle shape

[Ken Strauss]

> -Original Message-
> From: TJoseph Powderly [mailto:tjt...@gmail.com]
> Sent: Wednesday, March 20, 2019 9:29 PM
> To: Enhanced Machine Controller (EMC)
> Subject: [Emc-users] mister nozzle shape
>
> Hello Gene
> iirc the end of the nozzle should be 'dead square'
> meaning to taper, no burr, no fillet
> cannot find a reference url now
> but remember some test that surprised me
> a small burr was the culprit
> tomp
>
> haha just re-read it
> "Hello Mr Nozzle shape"
> reminisent of Tom Waits in Legend of Buster Scruggs
>

URL?




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