Re: [Emc-users] OT note to Erik C - Solar batteries

[Erik Christiansen]

On 13.02.19 12:04, Chris Albertson wrote:
> On Tue, Feb 12, 2019 at 5:07 PM Greg Bentzinger via Emc-users <
> emc-users@lists.sourceforge.net> wrote:
> 
> >
> > The shop will always have to be on the grid, the big CNC's have 26Kw or
> > higher startup loads. If the house is off grid then my electric bill will
> > be a 100% business expense.
> > (/Greg)
> 
> Have you looked at battery specs?   A Tesla Model 3 battery can supply 211
> Kw.   That is many times your 26 Kw requirement.   I think even a used
> battery that was recoved from a crashed car should be abe to supply way
> more than 26 Kw.The weak link is going to  be the inverter.

A number of inverter brands can be parallelled, sometimes using a separate
network connection to aid synchronisation or load sharing. Three 5 kW or
two 8 kW inverters would provide that short term output well within
their ratings, I think.

Erik


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Re: [Emc-users] OT note to Erik C - Solar batteries

[Chris Albertson]

On Tue, Feb 12, 2019 at 5:07 PM Greg Bentzinger via Emc-users <
emc-users@lists.sourceforge.net> wrote:

>
> The shop will always have to be on the grid, the big CNC's have 26Kw or
> higher startup loads. If the house is off grid then my electric bill will
> be a 100% business expense.
> (/Greg)
>



Have you looked at battery specs?   A Tesla Model 3 battery can supply 211
Kw.   That is many times your 26 Kw requirement.   I think even a used
battery that was recoved from a crashed car should be abe to supply way
more than 26 Kw.The weak link is going to  be the inverter.

-- 

Chris Albertson
Redondo Beach, California

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Re: [Emc-users] Would this blower be usefull as a low pressure mister for this 6040

[Gene Heskett]

On Wednesday 13 February 2019 11:23:38 Les Newell wrote:

> Hi Gene,
>
> You aren't the only one. I have a couple of the other type sitting
> around unused.
>
> Les

Nice to see I have company in this camp, Les. It doesn't feel quite so 
lonesome. ;-)

Got the light up, nice and bright. Now all I have to do is sit on my 
hands till all the other stuff gets here. I think in the meantime, when 
some decent 6mm carriage bolts arrive to replace the junk bolts supplied 
for holddown clamps, I'll make provisions to insulate them so I can run 
a probe wire to the workpiece. Make the alignment gismos work a lot 
easier.  But darn it, those came in SS only on fleabay, so I hope the 
brass inserted finger nuts I bought for that aren't going to gall to the 
SS bolts. I hate SS with a passion, I've had to break too many of them 
in 5/16" thru 7/16" and replace with copper, 300' up in the air while 
working on transmission lines. And no one has invented a never-seize 
that works on SS crap.

I think something along the lines of formica ought to cover that, and it 
will glue on a lot better than teflon or kaptan.  Anything tuff enough 
to stand the pressure and prevent the clamps from shorting the workpiece 
to the bed will do.

> > So I probably bought the wrong one. Expertise comes from the
> > experience of doing it wrong. :)
>
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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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[Emc-users] HAAS 5c indexer

[Dan Bloomquist]

Hi!

I'm looking at a HAAS 5C (HA5C) rotary indexer. It comes with the 
controller. From what I'm reading, these things operate via RS232. I've 
searched but have not found anyone talking about running a fourth axis 
with one of these on their mill. My controller is the mesa 7i77. If 
someone has done this and there is info, so much better than doubting 
and reinventing the wheel.


Thanks, Dan.


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Re: [Emc-users] Would this blower be usefull as a low pressure mister for this 6040

[Les Newell]

Hi Gene,

You aren't the only one. I have a couple of the other type sitting 
around unused.


Les


So I probably bought the wrong one. Expertise comes from the experience
of doing it wrong. :)




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Re: [Emc-users] Would this blower be usefull as a low pressure mister for this 6040 (Les Newell)

[Les Newell]

Hi Wallace,

I attached a pic in my previous post. I have attached that pic plus one 
with the nozzle disassembled.


Les

On 13/02/2019 09:36, Marshland Engineering wrote:


Any chance of a picture or sketch. I can't visualize your description.

Thanks Wallace
New Zealand.


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Re: [Emc-users] Would this blower be usefull as a low pressure mister for this 6040

[Gene Heskett]

On Wednesday 13 February 2019 09:33:08 jrmitchellj wrote:

> With that thin of a chip it is doing more "rubbing" than "cutting",
> and with a lot of heat in the chip, it is likely going to start
> friction welding the chips to the cutter.
> Things can go downhill very fast, and a broken cutter will result!

I saw that impending disaster while making the panel for the go704's new 
interface, stopped and cleaned out the cutter before I resumed. 4 or 5 
times. I got a usable panel, nearly burnt my hands on it, and held the 
120 psi air hose on it to finish the dsub connectors, last in the 
program. For the next one, I'll have the air, and a 8oz spray bottle of 
water handy.

Being what one could call "out in the puckerbrush" here in WV, it will be 
a week or more before any of the other stuff arrives, so I've commented 
out the 5 minute cooling delays, and changed the code as I talked about 
and you clipped so there are no more descending ramps in it. 

But if I actually cut alu, I'll have a finger on the esc key in case I 
start to see color from alu pileup in the tool.  In fact, I've bought a 
5000 lumem led stick lamp from Wallies, to hang on the bottom of the 
2x4' shelf the computer and drivers are mounted on, about 30" above the 
gantry bed, so I'll get that un-boxed and installed so I can see better.

> With the cooling rig that I have, the part often comes off the mill
> cooler than when it went on.  I keep the mist quantity very low, so
> the air moving it evaporates it quickly.

That implies pure water, as in distilled. I have that in gallon jugs 
because of the wifes oxygen reducer uses about a pint a day. It's also 
what I have in the motors coolant tank. About 3 gallons ATM.

Thanks J. R.
>
> --J. Ray Mitchell Jr.
> jrmitche...@gmail.com
> (818)324-7573
>
>
> "No problem can be solved from the same level of consciousness that
> created it"Albert Einstein
>
> On Wed, Feb 13, 2019 at 2:44 AM Gene Heskett  
wrote:
> > On Wednesday 13 February 2019 03:46:53 Les Newell wrote:
> > > I recently made a couple of coolant units based on eBay mister
> > > heads like this one
> > >  > >r-8m m-Air-Pipe-CNC-Lathe-Milling-Machine/172271983174?>. These
> > > ones with the straight end on the nozzle seem to be better quality
> > > than the ones with a nozzle that just tapers down to a blunt
> > > point. The problem with all of these eBay misters is that they
> > > generate a fine mist, which gets everywhere. I made some
> > > modifications on mine to work around the problem. The air jet in
> > > the model I linked above is just over 2mm diameter. I extended the
> > > oil jet using 2mm stainless tube so it now sticks out about 1.5"
> > > past the end of the brass nozzle. This leaves a thin annular gap
> > > for the air to get out. As the area of the air jet is now very
> > > small you can run quite high pressure (60 - 100 psi) with very low
> > > flow. By the time the air reaches the end of the oil jet it has
> > > slowed down a lot and no longer has the energy to  break the oil
> > > into a fine mist. You end up with a column of air carrying a
> > > stream of droplets in the middle. On alu oil consumption is
> > > minimal. I use a neat cutting oil and my previous tank was the
> > > filter bowl on an air regulator. That was enough for several days
> > > of machining.
> > >
> > > One down side of this setup is that it won't suck the coolant up
> > > from the tank. I used a filter canister as my reservoir. Shop air
> > > is supplied at full pressure to the nozzle through a solenoid
> > > valve. There is a tee in the line which feeds a regulator to drop
> > > the pressure to ~10 psi for the reservoir. Theoretically those
> > > filter canisters can take 100psi but that sort of pressure in a
> > > plastic tank scares me.
> > >
> > > By the way Gene, if you are buying a solenoid valve from eBay, get
> > > an Airtac valve. They are available in a wide range of voltages
> > > and configurations. They are reasonably well made and can handle
> > > 100% duty cycle.
> > >
> > > Les
> >
> > So I probably bought the wrong one. Expertise comes from the
> > experience of doing it wrong. :)
> >
> > > On 13/02/2019 01:31, Phillip Carter wrote:
> > > > I use a water filter canister similar to this:
> > > > https://www.cnczone.com/forums/uncategorised-metalworking-machin
> > > >es/1 02934-built-fog-less-coolant-mister.html
> > > >  > > >nes/ 102934-built-fog-less-coolant-mister.html>
> > > >
> > > > Cheers, Phill
> >
> > 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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> > Emc-users@lists.sourceforge.net
> > 

Re: [Emc-users] G43 question

[Ken Strauss]

Running PathPilot in lathe mode applies offsets for X, Y and Z.

> -Original Message-
> From: andy pugh [mailto:bodge...@gmail.com]
> Sent: Wednesday, February 13, 2019 9:08 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] G43 question
>
> On Wed, 13 Feb 2019 at 13:18, Ken Strauss  wrote:
> >
> > Yes, Tool 1 has a new entry for X after running the posted gcode (unset
> > offsets are not present). Note that this was tested using Tormach's 
> > PathPilot
>
> You would _definitely_ expect X offsets to work on a lathe. Especially
> as the Tormach lathe uses a gang toolholder.
>
> --
> 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] Would this blower be usefull as a low pressure mister for this 6040

[jrmitchellj]

With that thin of a chip it is doing more "rubbing" than "cutting", and
with a lot of heat in the chip, it is likely going to start friction
welding the chips to the cutter.
Things can go downhill very fast, and a broken cutter will result!

With the cooling rig that I have, the part often comes off the mill cooler
than when it went on.  I keep the mist quantity very low, so the air moving
it evaporates it quickly.



--J. Ray Mitchell Jr.
jrmitche...@gmail.com
(818)324-7573


"No problem can be solved from the same level of consciousness that created
it"Albert Einstein


On Wed, Feb 13, 2019 at 2:44 AM Gene Heskett  wrote:

> On Wednesday 13 February 2019 03:46:53 Les Newell wrote:
>
> > I recently made a couple of coolant units based on eBay mister heads
> > like this one
> >  >m-Air-Pipe-CNC-Lathe-Milling-Machine/172271983174?>. These ones with
> > the straight end on the nozzle seem to be better quality than the ones
> > with a nozzle that just tapers down to a blunt point. The problem with
> > all of these eBay misters is that they generate a fine mist, which
> > gets everywhere. I made some modifications on mine to work around the
> > problem. The air jet in the model I linked above is just over 2mm
> > diameter. I extended the oil jet using 2mm stainless tube so it now
> > sticks out about 1.5" past the end of the brass nozzle. This leaves a
> > thin annular gap for the air to get out. As the area of the air jet is
> > now very small you can run quite high pressure (60 - 100 psi) with
> > very low flow. By the time the air reaches the end of the oil jet it
> > has slowed down a lot and no longer has the energy to  break the oil
> > into a fine mist. You end up with a column of air carrying a stream of
> > droplets in the middle. On alu oil consumption is minimal. I use a
> > neat cutting oil and my previous tank was the filter bowl on an air
> > regulator. That was enough for several days of machining.
> >
> > One down side of this setup is that it won't suck the coolant up from
> > the tank. I used a filter canister as my reservoir. Shop air is
> > supplied at full pressure to the nozzle through a solenoid valve.
> > There is a tee in the line which feeds a regulator to drop the
> > pressure to ~10 psi for the reservoir. Theoretically those filter
> > canisters can take 100psi but that sort of pressure in a plastic tank
> > scares me.
> >
> > By the way Gene, if you are buying a solenoid valve from eBay, get an
> > Airtac valve. They are available in a wide range of voltages and
> > configurations. They are reasonably well made and can handle 100% duty
> > cycle.
> >
> > Les
>
> So I probably bought the wrong one. Expertise comes from the experience
> of doing it wrong. :)
>
> >
> > On 13/02/2019 01:31, Phillip Carter wrote:
> > > I use a water filter canister similar to this:
> > > https://www.cnczone.com/forums/uncategorised-metalworking-machines/1
> > >02934-built-fog-less-coolant-mister.html
> > >  > >102934-built-fog-less-coolant-mister.html>
> > >
> > > Cheers, Phill
>
>
> 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] G43 question

[andy pugh]

On Wed, 13 Feb 2019 at 13:18, Ken Strauss  wrote:
>
> Yes, Tool 1 has a new entry for X after running the posted gcode (unset
> offsets are not present). Note that this was tested using Tormach's PathPilot

You would _definitely_ expect X offsets to work on a lathe. Especially
as the Tormach lathe uses a gang toolholder.

-- 
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] G43 question

[Ken Strauss]

Yes, Tool 1 has a new entry for X after running the posted gcode (unset 
offsets are not present). Note that this was tested using Tormach's PathPilot 
which is a thinly skinned version of LinuxCNC since I don't have a "real" 
version to try it on.

> -Original Message-
> From: andy pugh [mailto:bodge...@gmail.com]
> Sent: Wednesday, February 13, 2019 7:41 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] G43 question
>
> On Wed, 13 Feb 2019 at 02:40, Ken Strauss  wrote:
> >
> > G43 appears to only apply the Z-offset from the tool table.
>
> That seems wrong, G43 should definitely also apply the XYABCUVW offsets
> too.
>
> Do you see the new numbers for X appear in the actual tool table?
>
> --
> 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] G43 question

[andy pugh]

On Wed, 13 Feb 2019 at 02:40, Ken Strauss  wrote:
>
> G43 appears to only apply the Z-offset from the tool table.

That seems wrong, G43 should definitely also apply the XYABCUVW offsets too.

Do you see the new numbers for X appear in the actual tool table?

-- 
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] Would this blower be usefull as a low pressure mister for this 6040

[Gene Heskett]

On Wednesday 13 February 2019 03:46:53 Les Newell wrote:

> I recently made a couple of coolant units based on eBay mister heads
> like this one
> m-Air-Pipe-CNC-Lathe-Milling-Machine/172271983174?>. These ones with
> the straight end on the nozzle seem to be better quality than the ones
> with a nozzle that just tapers down to a blunt point. The problem with
> all of these eBay misters is that they generate a fine mist, which
> gets everywhere. I made some modifications on mine to work around the
> problem. The air jet in the model I linked above is just over 2mm
> diameter. I extended the oil jet using 2mm stainless tube so it now
> sticks out about 1.5" past the end of the brass nozzle. This leaves a
> thin annular gap for the air to get out. As the area of the air jet is
> now very small you can run quite high pressure (60 - 100 psi) with
> very low flow. By the time the air reaches the end of the oil jet it
> has slowed down a lot and no longer has the energy to  break the oil
> into a fine mist. You end up with a column of air carrying a stream of
> droplets in the middle. On alu oil consumption is minimal. I use a
> neat cutting oil and my previous tank was the filter bowl on an air
> regulator. That was enough for several days of machining.
>
> One down side of this setup is that it won't suck the coolant up from
> the tank. I used a filter canister as my reservoir. Shop air is
> supplied at full pressure to the nozzle through a solenoid valve.
> There is a tee in the line which feeds a regulator to drop the
> pressure to ~10 psi for the reservoir. Theoretically those filter
> canisters can take 100psi but that sort of pressure in a plastic tank
> scares me.
>
> By the way Gene, if you are buying a solenoid valve from eBay, get an
> Airtac valve. They are available in a wide range of voltages and
> configurations. They are reasonably well made and can handle 100% duty
> cycle.
>
> Les

So I probably bought the wrong one. Expertise comes from the experience 
of doing it wrong. :)

>
> On 13/02/2019 01:31, Phillip Carter wrote:
> > I use a water filter canister similar to this:
> > https://www.cnczone.com/forums/uncategorised-metalworking-machines/1
> >02934-built-fog-less-coolant-mister.html
> >  >102934-built-fog-less-coolant-mister.html>
> >
> > Cheers, Phill


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] Would this blower be usefull as a low pressure mister for this 6040

[Gene Heskett]

On Wednesday 13 February 2019 00:25:04 jrmitchellj wrote:

> Yes, and Yes.
> The units Andy sited  on EBay look like a similar design to what I
> have.
>
> The key is to keep the bottle a bit lower than the exit plane of the
> nozzle, so that when the air is shut off, the coolant drains back, not
> continuing to syphon (dribble) out the nozzle.
>
> --J. Ray Mitchell Jr.
> jrmitche...@gmail.com
> (818)324-7573
>
That means the pop bottle has to be sitting on the table, below the 
machines deck. And that a short fat container would feed more 
consistently than a tall skinny pop bottle because the lift needed would 
be less of a change as its used up and the level in the container drops.

Ok. But laying in bed, thinking my coding style may be part of the 
problem in generating an excess of heating. I'm drilling holes by 
ramping down to the target depth, which is into the spoil board by 
passing the final depth to a G3 along with a P number so it goes about 8 
to 10 thou deeper per turn of the g3.

I'm seeing in my mind, a huge heat load because the bottom of the mill is 
actually cutting a sub .1 shaving" as the mill turns.  Its a 3 flute 
mill. You could probably read the funny's thru that chip, which isn't 
carrying away any heat considering that mill's bottom edges can be seen 
to be chipped under a scope.

Would I reduce this heat load by making that a loop, and stepping down 10 
thou at the origin point of the circular path, then cutting a 10 thou 
chip in the next trip around the circle? That stop & drop might leave a 
mark, but it would be hidden when the connector fills the hole.

What I'm seeing in my mind says that alone could get the job done and at 
considerably less generated heat simply because the chip is bigger 
instead of floating away on the passing air currents

What say the experts?

As much of this 400+ LOC is in subs,(and comments) the place to edit is 
in the sub, so it would be a relatively easy fix. Cutting the dsub would 
also need fixed as I am currently ramping down in the first quadrants 
cut, but just marching along for the other 3 runs to cut the d-shape. A 
single plunge cut replacing the ramp sounds like a good idea there too.

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] Would this blower be usefull as a low pressure mister for this 6040 (Les Newell)

[Marshland Engineering]

 I extended the oil jet using 2mm stainless tube so it now 
>sticks out about 1.5" past the end of the brass nozzle. This leaves a 
>thin annular gap for the air to get out. As the area of the air jet is 
>now very small you can run quite high pressure (60 - 100 psi) with very 
>low flow. By the time the air reaches the end of the oil jet it has 
>slowed down a lot and no longer has the energy to? break the oil into a 
>fine mist. You end up with a column of air carrying a stream of droplets 
>in the middle. 

Any chance of a picture or sketch. I can't visualize your description. 

Thanks Wallace
New Zealand.



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Re: [Emc-users] OT note to Erik C - Solar batteries

[Gregg Eshelman via Emc-users]

Here's a fellow in AU with a test of cheap vs expensive solar panels. Turns out 
the $90 panel puts out significantly more amps than the $300 panel he 
bought.https://www.youtube.com/watch?v=3-sc4rlV93g
 Some commenters note the cheap panel is using the newest thing in PV cells. No 
contact wires across the front to block some light and the face is matt finish 
instead of gloss so that likely helps absorb more light. But wow, $90 for a 100 
watt rated panel. Even if it falls apart after 10 years it's still pretty 
cheap, especially in a place with high cost per KWH.

   Tesla doesn't use lithium polymer, they use lithium ion. In the Model S the 
pack is chock full of 18650 cells, just like in most laptops that aren't super 
thin. The Model 3 and Model X are doing things differently. The relatively easy 
to remove Model S battery is a legacy of when Tesla had plans to build fast 
battery swap stations, but only built one that was never used.
Look up Rich Rebuilds on YouTube. He rebuilt a Model S that spent a week half 
submerged, used pretty much everything but the body shell from another one that 
had been rolled. He's rebuilt a second Model S, bought a used Model X (which 
took Tesla several months to deliver) and while waiting for that one he bought 
a Model X that was in a flood and is taking it all apart to rebuild. In the 
middle of all that has been his not so secret "secret" project of transplanting 
a Model S drivetrain into the back of a Porsche 911. He's not gone ALL 
electric, he has a Z06 Corvette. Never has said what his regular job is but it 
has to be pretty good to drop all that coin on Teslas.
 
On Tuesday, February 12, 2019, 9:48:34 PM MST, Erik Christiansen 
 wrote:  
 On 13.02.19 01:05, Greg Bentzinger via Emc-users wrote:
> A trend I have been noticing in the DIY solar crowd is to salvage the
> batteries from wrecked Tesla or Mercedes Hybrids. The Batteries are
> series wired for output in the 400VDC range but can be rewired in
> parallel for a 50-60VDC output. Just need to be sure the charge
> controller has a custom or Li-po setting.

I'm not sure there are any wrecked Tesla or Mercedes Hybrids in
Australia yet. I could lose a hand in the scrum for the battery or
motor. What also scares me about Li-po is what happened to early
Dreamliners, smartphones, and a few other gadgets which went up in
smoke.  
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Re: [Emc-users] Would this blower be usefull as a low pressure mister for this 6040

[Les Newell]

I recently made a couple of coolant units based on eBay mister heads 
like this one 
. 
These ones with the straight end on the nozzle seem to be better quality 
than the ones with a nozzle that just tapers down to a blunt point. The 
problem with all of these eBay misters is that they generate a fine 
mist, which gets everywhere. I made some modifications on mine to work 
around the problem. The air jet in the model I linked above is just over 
2mm diameter. I extended the oil jet using 2mm stainless tube so it now 
sticks out about 1.5" past the end of the brass nozzle. This leaves a 
thin annular gap for the air to get out. As the area of the air jet is 
now very small you can run quite high pressure (60 - 100 psi) with very 
low flow. By the time the air reaches the end of the oil jet it has 
slowed down a lot and no longer has the energy to  break the oil into a 
fine mist. You end up with a column of air carrying a stream of droplets 
in the middle. On alu oil consumption is minimal. I use a neat cutting 
oil and my previous tank was the filter bowl on an air regulator. That 
was enough for several days of machining.


One down side of this setup is that it won't suck the coolant up from 
the tank. I used a filter canister as my reservoir. Shop air is supplied 
at full pressure to the nozzle through a solenoid valve. There is a tee 
in the line which feeds a regulator to drop the pressure to ~10 psi for 
the reservoir. Theoretically those filter canisters can take 100psi but 
that sort of pressure in a plastic tank scares me.


By the way Gene, if you are buying a solenoid valve from eBay, get an 
Airtac valve. They are available in a wide range of voltages and 
configurations. They are reasonably well made and can handle 100% duty 
cycle.


Les

On 13/02/2019 01:31, Phillip Carter wrote:

I use a water filter canister similar to this:
https://www.cnczone.com/forums/uncategorised-metalworking-machines/102934-built-fog-less-coolant-mister.html
 


Cheers, Phill


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