Re: [Emc-users] One other Q related to the bellows fittings

[MC Cason]

Gene,

   Unless you have a good air dryer, a couple of psi of compressed air 
will cause more problems than it's worth.  On a rainy/humid day, 
compressed air will be wet with water.  The bellows will trap the water, 
and raise the humidity level around the ballscrew, which will cause 
premature failure, due to contamination of the lubricant, and corrosion.

   A cheap water separator will get part of the water out, but nowhere 
near all of it.  A coalescing air filter can get most of the water out, 
but they are expensive, the replacement ceramic filters are expensive, 
and they require fairly constant inspection.  They are used in paint 
shops as a final filter before the paint gun.

   Why not use a passive way to allow air in and out?  You will still 
have a problem with humidity, but it will be less than with compressed air.
https://amzn.com/B003Q6CBNY
https://amzn.com/B008OTNGXC

   BTW, airplanes use air filters that look like fuel filters. Maybe a 
cheap fuel filter for a lawn mower could be tested to see how well it 
would work as a vacuum break?  Attach a hose to the outlet end only, 
leave the inlet open to free air, and connect the hose to wherever you 
were planning on attaching your air hose. Depending on use, the lifespan 
would be on the order of months, but they are cheap, and easy to replace 
(Unlike an airplane).

   This is what a Cessna vacuum air filter looks like (NOT cheap):
http://www.aircraftspruce.com/catalog/inpages/Inline_airfilter.php


On 10/08/2016 10:11 PM, Gene Heskett wrote:
> Greetings all;
>
> Does anyone know it the end bearings that come with a C7 grade Chinese
> ball screw are neoprene seals or just very close fitting dust covers?
>
> I am attempting to come up with a SWAG as to how much leakage per hour
> there might be with 1 or 2 PSIA inside the bellows. The dust cover
> versions I expect the pressure would just drive out the lube in a few
> days is it was high enough to stiffen the bellows noticeably.  And I'd
> expect I'd better fit a t so I could rig an oil filled vinyl manometer
> tube off it.  Something like RCA did to monitor the air pressure across
> the anode fins of the high power tubes they used in the '60's comes to
> mind.  Anything below 14" was time to clean things, blowers and filters
> first.
>
> Cheers, Gene Heskett


-- 
MC Cason
Eagle3D - Created by Matthias Weißer
github.com/mcason/Eagle3D



--
Check out the vibrant tech community on one of the world's most 
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

[Emc-users] One other Q related to the bellows fittings

[Gene Heskett]

Greetings all;

Does anyone know it the end bearings that come with a C7 grade Chinese 
ball screw are neoprene seals or just very close fitting dust covers?

I am attempting to come up with a SWAG as to how much leakage per hour 
there might be with 1 or 2 PSIA inside the bellows. The dust cover 
versions I expect the pressure would just drive out the lube in a few 
days is it was high enough to stiffen the bellows noticeably.  And I'd 
expect I'd better fit a t so I could rig an oil filled vinyl manometer 
tube off it.  Something like RCA did to monitor the air pressure across 
the anode fins of the high power tubes they used in the '60's comes to 
mind.  Anything below 14" was time to clean things, blowers and filters 
first.

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 

--
Check out the vibrant tech community on one of the world's most 
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] pressure equalizer method around ball nut

[Gene Heskett]

On Saturday 08 October 2016 15:51:30 Gene Heskett wrote:

Update, having fixed the funkity cable. I went to work on my 
holefinder.ngc code, and it is now giving me plus or minus .0001 
repeatable results. I can live with that. :)  Now, if I can get the sim 
version of lcnc to reload the mill config, I'll be off the races, 
writing the code to finish the flange sides of these bellows nipples.

Sounds like a good project for tomorrow morning since I just put another 
half a mile on these legs at the grocery store, and they are 
complaining.

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 

--
Check out the vibrant tech community on one of the world's most 
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] pressure equalizer method around ball nut

[Gene Heskett]

On Friday 07 October 2016 19:05:56 Gene Heskett wrote:

> Greetings to PCW;
>
> I have a 2nd apparent failure of a 5i25, affecting the same p3-15 pin.
> So I am suspecting I have a bad BoB or home rolled cable.
>
> I have a perfectly good 4.77 volts at the BoB's input, which does go
> to ground if I touch the wire to the machine frame, but it is not
> getting thru the BoB and the 5i25 to motion.probe-input.
>
> How hard is it to setup a 3rd port, using the parport in the computer,
> so I could move the cable to the parport long enough to verify it is,
> or isn't, the 5i25.
>
> Unlike the first time when I thought I had blown that pin on the 5i25
> because there wasn't a solid ground on the machine frame, this time
> there is zero volts dc on the machine frame, and less than 1 millivolt
> of AC with the motors all moving, So I do have a good ground now.  And
> I have cable and connectors enough to make a new cable.  And I've
> another BoB because I bought two for the Sheldon.  So somewhere in
> this briarpatch is a fix. Changing the BoB would be a PIMA because
> while the old on is pretty much straight thru, the 2 new ones I have
> are hopelessly scrambled.
>
> Is that parport tester in the docs standalone?  If yes, that should
> sort this quite a bit faster. Just move the cable to the parport and
> test away.
>
> Things to check other than what I just listed?
>
> That teflon rod, with a piece of 10 gauge copper for the probe is
> together and looks like it will work well with my hole finder routine.
>
> But first I need to actually make a G38.2 work.
>
> Thanks Peter.
>
> Cheers, Gene Heskett

I think I found it. I put another cable and bob on that 5i25 socket, 
worked. Looking at the male to male I had to use with that hacked up 
BOB, I could see it was 10 or 15 thou from being fully crimped, so 
another few pinches with the vice and it seems to have a solid 
connection now. I suspect there is nothing wrong with the 5i25 I took 
out from the first time it failed. So back to the grindstone with this 
current project. I don't really like that particular male IDC, it did 
not come with the cable clamping top.

Thanks all for bearing with 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 

--
Check out the vibrant tech community on one of the world's most 
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Probe cycle switches to MDI

[Gene Heskett]

On Saturday 08 October 2016 13:46:12 Danny Miller wrote:

And I copied to the developers list as you bring up a point that I too 
would like to see fixed. It will not fix my instant problem of the G38 
contact not getting to motion.probe-input, that  signal lost failure 
will still crush the probe or the workpiece.  See below when I grokked 
what is happening to you.

> On 10/8/2016 12:13 PM, Gene Heskett wrote:
> > On Saturday 08 October 2016 12:25:57 Danny Miller wrote:
> >> I have the wireless pendant button triggering a probe cycle in an
> >> .ngc.
> >>
> >> Problem is, IF the cycle ends without tripping the probe (user
> >> error), Axis UI ends up switching to MDI tab, and all the pendant
> >> function is for Manual Control tab.  So it disables the pendant
> >> until you can get back to the PC and fix it by clicking back to
> >> Manual Control tab.  Why does it end up in MDI tab, and how can
> >> make LinuxCNC end up back in the Manual Control tab?
> >>
> >> .ngc code below:
> >>
> >> 
> >> o100 sub
> >>
> >> #1 = #[5203 + [20 * #5220] ]
> >>
> >> G38.3 F50 Z[-6.5-#1]
> >
> > Coding style. did you mean -6.5 - #1? I always use a space around a
> > math function char, reducing the ambiguity when I go back and read
> > it months/years later.
> >
> >> G10 L2 P0 Z1.826
> >
> > This also is a coding style preference, but I have gotten out of the
> > habit of adjusting the G54 map.  It reduces the hunting while
> > looking for a map that matches the one originally homed to mapping,
> > for me at least.  So I wind up using the next 2 or 3 maps in most of
> > my coding.
> >
> > This also is a disadvantage because, realizing the machine is going
> > to hit a fixture or something I didn't intend, hitting the esc key
> > restores G54, and unless you know what map was in use, you lost the
> > data that would tell me my math was funkity or THAT map was funkity
> > because my math was.
>
> Yeah I wanted to refer to a .ini parameter.  Wasn't sure how, on my
> to-do list.  So I can refer to .ini parameters inside g-code?

No, but .hal code can.

> Z#<_probing.probethickness>  or what?

If its truly a fixed value, how about

#<_probe_len>

These are not cleared when you load a different bit of gcode, so one 
could add it to one normal preamble, ran once as the lcnc machine has 
been rebooted, I don't 100% trust that it would survive a cold reboot.  
With hot reboots, the actual survival rate of stuff like that was quite 
good, amazing me at the time I discovered it, several years ago.

Mine however is a piece of 10 gauge copper wire, buried in a 3/4" 
diameter teflon rod, which has no stop collar.  I use it far more often 
in finding and establishing the exact center of a hole so everything 
else can then be calculated from there.  If I need to find a Z position, 
I put a .0625" thick pcb on the work, use the real cutting tool, usually 
rotating backwards, and add that pcb thickness to get the tool at 
contact=0..

I have yet, when the probe circuit is working, to put a visible mark on 
the piece of pcb, the contact is that gentle, and I usually have a .2 uf 
cap across the contact so a momentary contact is saved long enough for 
lcnc to register it.  That improved its repeatability quite a bit.

> Point is, probe tool is 1.826 inches thick, so once it touches off it
> needs to fix the z-offset for that point to be 1.826 so z=0 is the
> bottom of the probe, i.e. the surface it's sitting on.
>
> >> o101 if [#5070 EQ 1]
> >>   G10 L20 P0 Z1.826
> >>   G1 Z1.93 F3
> >>   G38.3 F3 Z[1.6] (<- useless brackets. what effect? if any)
> >>   G10 L20 P0 Z1.826
> >>   G0 Z2.5
> >> o101  else
> >>   G53 G0 Z0
> >>   (debug, FAILED TO FIND PROBE)
> >> o101 endif
> >>
> >> o100 endsub
> >> 
> >>
> >>
> >> Thanks,
> >>
> >> Danny
> >
> > I don't see anything above that would put you in the mdi mode unless
> > the math equates to an F5 character somehow. Not seeing the rest of
> > the code, I've no clue if the scope of #1 thru #30 has been
> > violated.
>
> It's if the probe cycle fails to trip.  If the probe gets found in the
> acceptable travel, all is well.

Ahh, yes, the miss is reported. Now the light of comprehension comes on.

I don't know of a way around that, and IMO the miss should not be an 
error, but a return value so far out of range that ones software can use 
it for an error flag as you tried to do with the 'else' above. But the 
error catcher in the g38 code won't let it work.

Perhaps something can be added to the G38 call that would make that the 
g-code writers choice?  I'd be very happy with that option. The stopper 
error in the g38 miss condition as it exists now is a PIMA. It should be 
our choice.
 
> If the probe travel limit is reached, the error condition dumps out of
> the .ngc code and for some odd reason the Axis UI ends up with the MDI
> tab selected.  Well it's not incomprehensible, Axis tried to run
> g-code and got an exception condition.  But it's a problem, not a
> 

Re: [Emc-users] Probe cycle switches to MDI

[Danny Miller]

On 10/8/2016 12:13 PM, Gene Heskett wrote:
> On Saturday 08 October 2016 12:25:57 Danny Miller wrote:
>
>> I have the wireless pendant button triggering a probe cycle in an
>> .ngc.
>>
>> Problem is, IF the cycle ends without tripping the probe (user error),
>> Axis UI ends up switching to MDI tab, and all the pendant function is
>> for Manual Control tab.  So it disables the pendant until you can get
>> back to the PC and fix it by clicking back to Manual Control tab.  Why
>> does it end up in MDI tab, and how can make LinuxCNC end up back in
>> the Manual Control tab?
>>
>> .ngc code below:
>>
>> 
>> o100 sub
>>
>> #1 = #[5203 + [20 * #5220] ]
>>
>> G38.3 F50 Z[-6.5-#1]
> Coding style. did you mean -6.5 - #1? I always use a space around a math
> function char, reducing the ambiguity when I go back and read it
> months/years later.
>
>> G10 L2 P0 Z1.826
> This also is a coding style preference, but I have gotten out of the
> habit of adjusting the G54 map.  It reduces the hunting while looking
> for a map that matches the one originally homed to mapping, for me at
> least.  So I wind up using the next 2 or 3 maps in most of my coding.
>
> This also is a disadvantage because, realizing the machine is going to
> hit a fixture or something I didn't intend, hitting the esc key restores
> G54, and unless you know what map was in use, you lost the data that
> would tell me my math was funkity or THAT map was funkity because my
> math was.
Yeah I wanted to refer to a .ini parameter.  Wasn't sure how, on my 
to-do list.  So I can refer to .ini parameters inside g-code? 
Z#<_probing.probethickness>  or what?
Point is, probe tool is 1.826 inches thick, so once it touches off it 
needs to fix the z-offset for that point to be 1.826 so z=0 is the 
bottom of the probe, i.e. the surface it's sitting on.
>
>> o101 if [#5070 EQ 1]
>>   G10 L20 P0 Z1.826
>>   G1 Z1.93 F3
>>   G38.3 F3 Z[1.6] (<- useless brackets. what effect? if any)
>>   G10 L20 P0 Z1.826
>>   G0 Z2.5
>> o101  else
>>   G53 G0 Z0
>>   (debug, FAILED TO FIND PROBE)
>> o101 endif
>>
>> o100 endsub
>> 
>>
>>
>> Thanks,
>>
>> Danny
>>
> I don't see anything above that would put you in the mdi mode unless the
> math equates to an F5 character somehow. Not seeing the rest of the
> code, I've no clue if the scope of #1 thru #30 has been violated.
It's if the probe cycle fails to trip.  If the probe gets found in the 
acceptable travel, all is well.
If the probe travel limit is reached, the error condition dumps out of 
the .ngc code and for some odd reason the Axis UI ends up with the MDI 
tab selected.  Well it's not incomprehensible, Axis tried to run g-code 
and got an exception condition.  But it's a problem, not a show-stopper 
but I did aim to make the pendant control essentially everything but 
file selection with minimal need to use the terminal.
>
> This to me is a very strong argument in favor of separating global data
> from local data by the use of #<_name> (note the underscore) for global
> variables, and # for local to this subroutine data.  In my own
> coding I find that results in far fewer surprises.  Either way works if
> you pay attention but I find that the leading underscore is a reminder
> that this is global data, and its lack as an indicator that this was
> intended to be local, vanishing with the end of the subroutine rather
> handy when I am reading it again later.
>
> Named data to me is at least as handy as sliced bread. :)
>
> I've no clue if this helps but I hope it does Danny.
>
> Cheers, Gene Heskett


--
Check out the vibrant tech community on one of the world's most 
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Probe cycle switches to MDI

[John Alexander Stewart]

Danny - not an answer, but I do find sometimes that my USB MPG will cause
that to happen.

It is on an older version of LinuxCNC that I should update sometime, hoping
that a bug fix has cured it.

Sorry for no answer, but at least you know you are not the only one. ;-)

John.
--
Check out the vibrant tech community on one of the world's most 
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Probe cycle switches to MDI

[Gene Heskett]

On Saturday 08 October 2016 12:25:57 Danny Miller wrote:

> I have the wireless pendant button triggering a probe cycle in an
> .ngc.
>
> Problem is, IF the cycle ends without tripping the probe (user error),
> Axis UI ends up switching to MDI tab, and all the pendant function is
> for Manual Control tab.  So it disables the pendant until you can get
> back to the PC and fix it by clicking back to Manual Control tab.  Why
> does it end up in MDI tab, and how can make LinuxCNC end up back in
> the Manual Control tab?
>
> .ngc code below:
>
> 
> o100 sub
>
> #1 = #[5203 + [20 * #5220] ]
>
> G38.3 F50 Z[-6.5-#1]

Coding style. did you mean -6.5 - #1? I always use a space around a math 
function char, reducing the ambiguity when I go back and read it 
months/years later.

> G10 L2 P0 Z1.826

This also is a coding style preference, but I have gotten out of the 
habit of adjusting the G54 map.  It reduces the hunting while looking 
for a map that matches the one originally homed to mapping, for me at 
least.  So I wind up using the next 2 or 3 maps in most of my coding.

This also is a disadvantage because, realizing the machine is going to 
hit a fixture or something I didn't intend, hitting the esc key restores 
G54, and unless you know what map was in use, you lost the data that 
would tell me my math was funkity or THAT map was funkity because my 
math was.

>
> o101 if [#5070 EQ 1]
>  G10 L20 P0 Z1.826
>  G1 Z1.93 F3

>  G38.3 F3 Z[1.6] (<- useless brackets. what effect? if any)

>  G10 L20 P0 Z1.826
>  G0 Z2.5
> o101  else
>  G53 G0 Z0
>  (debug, FAILED TO FIND PROBE)
> o101 endif
>
> o100 endsub
> 
>
>
> Thanks,
>
> Danny
>
I don't see anything above that would put you in the mdi mode unless the 
math equates to an F5 character somehow. Not seeing the rest of the 
code, I've no clue if the scope of #1 thru #30 has been violated.

This to me is a very strong argument in favor of separating global data 
from local data by the use of #<_name> (note the underscore) for global 
variables, and # for local to this subroutine data.  In my own 
coding I find that results in far fewer surprises.  Either way works if 
you pay attention but I find that the leading underscore is a reminder 
that this is global data, and its lack as an indicator that this was 
intended to be local, vanishing with the end of the subroutine rather 
handy when I am reading it again later.

Named data to me is at least as handy as sliced bread. :)

I've no clue if this helps but I hope it does Danny.

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 

--
Check out the vibrant tech community on one of the world's most 
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Probe cycle switches to MDI

[andy pugh]

On 8 October 2016 at 17:25, Danny Miller  wrote:
> Why
> does it end up in MDI tab, and how can make LinuxCNC end up back in the
> Manual Control tab?

I imagine that you have the pendant connected to one of the
MDI_COMMAND HAL pins? Those use MDI, and switch to the MDI window.

How doe the pendant interface to LinuxCNC? wheel-jogging appears to
work regardless of manual/mdi mode

You could toggle the halui.mode.manual pin to return to manual mode.
However that doesn't switch tabs in the Axis GUI, so I am not sure if
it has the required effect.

-- 
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

--
Check out the vibrant tech community on one of the world's most 
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

[Emc-users] Probe cycle switches to MDI

[Danny Miller]

I have the wireless pendant button triggering a probe cycle in an .ngc.

Problem is, IF the cycle ends without tripping the probe (user error), 
Axis UI ends up switching to MDI tab, and all the pendant function is 
for Manual Control tab.  So it disables the pendant until you can get 
back to the PC and fix it by clicking back to Manual Control tab.  Why 
does it end up in MDI tab, and how can make LinuxCNC end up back in the 
Manual Control tab?

.ngc code below:


o100 sub

#1 = #[5203 + [20 * #5220] ]

G38.3 F50 Z[-6.5-#1]
G10 L2 P0 Z1.826

o101 if [#5070 EQ 1]
 G10 L20 P0 Z1.826
 G1 Z1.93 F3
 G38.3 F3 Z[1.6]
 G10 L20 P0 Z1.826
 G0 Z2.5
o101  else
 G53 G0 Z0
 (debug, FAILED TO FIND PROBE)
o101 endif

o100 endsub



Thanks,

Danny


--
Check out the vibrant tech community on one of the world's most 
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Happy 82nd to me, and the latest version of my G76 tweaker for you

[Gene Heskett]

On Saturday 08 October 2016 06:35:55 Erik Christiansen wrote:

> On 04.10.16 21:12, Gene Heskett wrote:
> > On Tuesday 04 October 2016 19:24:07 john mcintyre wrote:
> > > Good Day  Gene,
> > > Best wishes for your 82nd birthday .
> > > Many thanks for your effort and wit .
> > >  Cheers , john
> >
> > Thank you John, from the right side up part of the planet. :) 
> > Although I'd imagine being told your toilets spin the wrong way when
> > they are flushed does get tiresome. :(  Australia is a place I'd
> > like to have visited when I was young enough to enjoy it, sadly that
> > never happened, too much life got in the way.  But I hear your beer
> > is top shelf stuff.
>
> Belated congratulations on riding this rock another trip around the
> star, Gene, and cheers of admiration for your ability to keep making
> stuff.
>
> There is an increasing number of boutique brewers here down under, and
> "Redback" is my favourite amongst 'em. It is possible to buy American
> and German beers here (much to my satisfaction), so there are probably
> shops with a few Aussie beers up the top end of the planet - but maybe
> not out where the free-range folk like to live.

I suspect that to be the case, Erik.  Being a DM-II, alcohol is instant 
sugar, and to be avoided, if possible. so this confirmed alky limits his 
intake while almost slaking his thirst for beer with Miller64, at only 
2.8% alky. One to wash a metformin pill down with at dinner, and a long 
evening might have another. Near beer to some tastes, but thats the 
breaks you have when diabetic. The only Aussie beer was bought by a NA 
brewer a couple decades back, Fosters, and I can't say what changed, but 
I've not had the urge to buy it in years, where it was very good stuff 
40 years back. Comes in 24 oz alu cans which is another checkmark in the 
minus column as I made the connection between Alzheimers and alu 30 
years back so my garbage bags clink cause I buy it in glass.

> Erik
> (Just back an hour from ten days on the farm, making sawdust.)

Making your own building material?  My grandfather had a sawmill when I 
was a child of 5 as he had most of a section of Madison County Iowa, 
with the middle fork of the Coon River crossing it so he had a wood yard 
100 yards wide & over half a mile long.  Today its deer woods I'd 
expect, but then there was no deer. Only squirrel, groundhogs and 
rattlesnakes.  His house still stands, or was about 20 years ago when 
out on vacation I found it again just so I could show my bride where I 
came from, being rented out as the rest of the farm yard has been plowed 
under by whomever owns it now. Grandpa ran it enough that most of the 
outbuildings he had were made from that strip of woods. He also had 
electric lights and such as the windmill tower closest to the house was 
holding up a Delco Wincharger, with a bank of batteries for 32 volts 
that look exactly like the batteries the telephone companies used.  Big 
glass things, about 6 gallons per cell.

The blade on it, more efficient than a factory blade, was carved by him, 
following drawings my mother made because she was the only girl in the 
1929 class on aviation technology at Des Moines Technical High School.

So you could say I was well exposed to things electrical at an early 
age. :)  Reading by the time I started school. If my mother didn't know 
the answer to my question, she did know where the library was, so I was 
often trying to understand high school physics books of the day.

Its been a long, sometimes enjoyable, sometimes sad, journey so far. But 
I am paying for that time in front of TLM yesterday, yet this morning.  
So my giddyup got up and left without me. But a wee bit more time for 
the pills to work, and a 2nd cuppa, will have me out in the kitchen 
restarting the dishwasher, and that moving around will probably loosen 
me up to go hit the garage, chasing why the bobs pin 15 is showing 
contact, but its not getting past the bob, the cable, and a mesa 5i25 
card so lcnc's motion.probe-input isn't being told the probe has made 
contact.  Home-made IDC connector db-25 cable is first suspect against 
the wall, and we progress from there. I think I have enough stuff here 
already.  The lack of giddyup caused by the back is the main problem.

> P.S. Around here, the dunny only spins when I've had too many beers.
>
;D

Take care Erik.

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 

--
Check out the vibrant tech community on one of the world's most 
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Happy 82nd to me, and the latest version of my G76 tweaker for you

[Erik Christiansen]

On 04.10.16 21:12, Gene Heskett wrote:
> On Tuesday 04 October 2016 19:24:07 john mcintyre wrote:
> 
> > Good Day  Gene,
> > Best wishes for your 82nd birthday .
> > Many thanks for your effort and wit .
> >  Cheers , john
> >
> Thank you John, from the right side up part of the planet. :)  Although 
> I'd imagine being told your toilets spin the wrong way when they are 
> flushed does get tiresome. :(  Australia is a place I'd like to have 
> visited when I was young enough to enjoy it, sadly that never happened, 
> too much life got in the way.  But I hear your beer is top shelf stuff.

Belated congratulations on riding this rock another trip around the star,
Gene, and cheers of admiration for your ability to keep making stuff.

There is an increasing number of boutique brewers here down under, and
"Redback" is my favourite amongst 'em. It is possible to buy American
and German beers here (much to my satisfaction), so there are probably
shops with a few Aussie beers up the top end of the planet - but maybe
not out where the free-range folk like to live.

Erik
(Just back an hour from ten days on the farm, making sawdust.)

P.S. Around here, the dunny only spins when I've had too many beers.

--
Check out the vibrant tech community on one of the world's most 
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] pressure equalizer method around ball nut

[Gene Heskett]

On Saturday 08 October 2016 01:23:06 Gregg Eshelman wrote:

> Pretty simple. There's a vertical dial indicator on top, which doesn't
> rotate. The rods fit into the bottom part that does rotate. If the ID
> or OD it's touching isn't precisely centered, the rod wiggles back and
> forth, causing another part to move up and down as the rod spins
> around. Sort of like the reverse of collective pitch control in a
> helicopter. When the needle on the indicator stops wiggling, the part
> is centered under the spindle.
>
Sounds like a handy gizmo to have, and easy enough for the all mechanical 
types to understand.  But a shop made electrical probe and some g38.2 
magic works for that to a fraction of a thou repeatability, and it 
didn't cost me anything, and might be faster. But probably 6 of one, a 
half dozen of the other time wise.  As a C.E.T., I naturally lean to the 
all electrical solution and some gcode to do that as its free of any $ 
expenditure. :)
>
>
>   From: Gene Heskett 
>  To: emc-users@lists.sourceforge.net
>  Sent: Friday, October 7, 2016 8:47 AM
>  Subject: Re: [Emc-users] pressure equalizer method around ball nut
>
> On Friday 07 October 2016 09:46:22 andy pugh wrote:
> > You could consider using one of these instead of a probe:
> > http://www.ebay.com/itm/CO-AX-INDICATOR-MILLING-MACHINE-COAXIAL-COAX
> >-0 005-/300841418164
>
> I've not figured out how one of those works.  The price seems decent
> though.
>
>
> --
> Check out the vibrant tech community on one of the world's
> most engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users


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 

--
Check out the vibrant tech community on one of the world's most 
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] pressure equalizer method around ball nut

[Gene Heskett]

On Saturday 08 October 2016 01:10:47 Gregg Eshelman wrote:

> Or you could get a coaxial indicator like
> this.http://www.ebay.com/itm/262647994320
>
Maybe, but I've used a G38.2 wrapper to do this function several thousand 
times.  So my efforts to find why its not now getting to the 5i25's 
gpio.003.in_not from pin 15 on the bob will continue, starting with a 
good cable shake (its a shop made cable based on idc connectors on both 
ends) once I get up on the ladder to reach it comfortably later this 
morning.

This is all up on a sturdy shelf about 6 feet up in the air. And I've got 
another 80 feet of the cable and bags of those idc connectors.

I was too tired to continue any farther as I had been on my feet, 
standing in front of TLM all day, carving the flanges and center thru 
holes on the makings of 4 of these bellows nipples, when I found the the 
contact was getting to the bob's pin 15 but not showing at 
hm2_5i25.0.gpio.003.in_not on a halmeter.

That leaves the bob, the cable, and the 5i25, which has been replaced 
once already to fix this same problem early last spring.  That narrows 
the area to search. I have another bob too, but its a PITA because its 
IO is labeled for use with mach and its a chore to trace thru the docs 
and find the io pins by pin number.

There are several ways to skin this cat, I just need to expend the 
giddyup to do it. :)

Thanks Gregg.

>   From: Gene Heskett 
>  To: emc-users@lists.sourceforge.net
>  Sent: Friday, October 7, 2016 7:33 AM
>  Subject: Re: [Emc-users] pressure equalizer method around ball nut
>
> Film at 11, but day unknown. :) When I get the other two thru holes
> bored, I think next is an insulated probe so I can find the exact
> center of the thru holes on the mill. Thats something I've yet to
> cobble up. Squeeze a piece of 12ga solid copper in a couple layers of
> heat shrink in the drill chuck, split the end of a stranded wire &
> wrap it around the solid wire for the G38.2 probe connection, bending
> the end of the 12 gage solid so it, when spinning at a couple hundred
> rpms, fits in the hole & the machine doesn't have to move all that far
> to find all four "corners" of the hole, from which the exact center,
> well within a thou, can be found.
>
>
> --
> Check out the vibrant tech community on one of the world's
> most engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users


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 

--
Check out the vibrant tech community on one of the world's most 
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users