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

Galvanic corrosion from different metals in contact with any amount of moisture. Running electricity through the contact makes it worse. The only way aluminum wiring meets code is with a copper pigtail between it and any screwed down or push in connection. There are special crimp sleeves and

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

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

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

Or you could get a coaxial indicator like this.http://www.ebay.com/itm/262647994320 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,

Re: [Emc-users] Any Interest or Ideas for a Linuxcnc Fest 2016 ?

Regular industrial building. Main is 480v 3ph 1 step down to 120 On Oct 7, 2016 2:06 PM, "Ed" wrote: > What power is available? 240V 3 phase I hope? > > > > -- > Check out the vibrant tech community on

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

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

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

On 7 October 2016 at 20:55, Przemek Klosowski wrote: > If the alumina layer is thickened (e.g. by anodization), the aluminum > objects will be isolated; I will also note the apparent conductivity of my anodized solder-sucker. But that is probably a think anodised

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

On Fri, Oct 7, 2016 at 1:08 PM, andy pugh wrote: > On 7 October 2016 at 17:09, Dave Cole wrote: > > > > Does this give me a clue? > > https://www.researchgate.net/post/What_is_aluminium_and_ > its_oxide_electrical_properties2 > > It seems to be lots

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

On 7 October 2016 at 20:08, Gene Heskett wrote: > Force one probe to actually dent the surface so you know you are making a > connection WITH that probe. Then lay, or let gently swing to touch a > clean looking spot, the other probe, without using the point, or a sharp >

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

On Friday 07 October 2016 12:09:35 Dave Cole wrote: > On 10/7/2016 11:48 AM, andy pugh wrote: > > On 7 October 2016 at 15:47, Gene Heskett wrote: > >>> I have never found aluminium to be non-conductive. > >> > >> Its a good conductor, IF you can achieve a 'gas tight'

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

On Friday 07 October 2016 11:48:07 andy pugh wrote: > On 7 October 2016 at 15:47, Gene Heskett wrote: > >> I have never found aluminium to be non-conductive. > > > > Its a good conductor, IF you can achieve a 'gas tight' connection, > > AND maintain it for decades. > > No,

Re: [Emc-users] Any Interest or Ideas for a Linuxcnc Fest 2016 ?

What power is available? 240V 3 phase I hope? -- Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot

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

On 7 October 2016 at 17:09, Dave Cole wrote: > > Does this give me a clue? > https://www.researchgate.net/post/What_is_aluminium_and_its_oxide_electrical_properties2 It seems to be lots of people saying "Aluminium is non-conducting" without doing the simple test with a

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

On 10/7/2016 11:48 AM, andy pugh wrote: > On 7 October 2016 at 15:47, Gene Heskett wrote: >>> I have never found aluminium to be non-conductive. >>> >> Its a good conductor, IF you can achieve a 'gas tight' connection, AND >> maintain it for decades. > No, really. Get some

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

On 7 October 2016 at 15:47, Gene Heskett wrote: >> I have never found aluminium to be non-conductive. >> > Its a good conductor, IF you can achieve a 'gas tight' connection, AND > maintain it for decades. No, really. Get some aluminium and your multimeter. You will find

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

On Friday 07 October 2016 10:34:19 Roland Jollivet wrote: > On 6 October 2016 at 17:27, Gene Heskett wrote: > > On Thursday 06 October 2016 09:54:59 andy pugh wrote: > > > On 6 October 2016 at 12:32, Gene Heskett wrote: > > > > Anybody got a better

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

On Friday 07 October 2016 09:46:22 andy pugh wrote: > On 7 October 2016 at 14:33, Gene Heskett wrote: > > It all gets complex fast when dealing with alu and > > its instant oxidation. > > I have never found aluminium to be non-conductive. > Its a good conductor, IF you

[Emc-users] pressure equalizer method around ball nut

On 6 October 2016 at 17:27, Gene Heskett wrote: > On Thursday 06 October 2016 09:54:59 andy pugh wrote: > > > On 6 October 2016 at 12:32, Gene Heskett wrote: > > > Anybody got a better idea than sacrificing two of the six bolt > > > positions to make

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

On 7 October 2016 at 14:33, Gene Heskett wrote: > It all gets complex fast when dealing with alu and > its instant oxidation. I have never found aluminium to be non-conductive. You could consider using one of these instead of a probe:

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

On Thursday 06 October 2016 11:27:46 Gene Heskett wrote: > On Thursday 06 October 2016 09:54:59 andy pugh wrote: > > On 6 October 2016 at 12:32, Gene Heskett wrote: > > > Anybody got a better idea than sacrificing two of the six bolt > > > positions to make the coupling