Re: [Emc-users] 3D Printer Mods?

2012-05-30 Thread Joachim Franek
On Wednesday 30 May 2012 05:04:15 Jeshua Lacock wrote: ... and ultimately I will share my plan of attack. I'm curious about it. The board already working with LinuxCNC sounds like it is the most ready to use, but on the downside it looks like I would have to have the board custom made

[Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Roland Jollivet
Hi Alex Do you mind saying what you are printing, and if you feel the printing is a worthwhile exercise? I've been looking at different printers for months, but they only seem to be able to produce junk. Cnc'ing it out of a block of plastic looks far more effective. Regards Roland On 29 May

Re: [Emc-users] Question with gantry setup

2012-05-30 Thread andy pugh
On 30 May 2012 03:42, Jon Elson el...@pico-systems.com wrote: When the home command is given, both motors are given identical step rates toward the home position.  When the first motor trips the home switch, the step pulses are interrupted to that motor. I think that one would have to do

Re: [Emc-users] Question with gantry setup

2012-05-30 Thread Viesturs Lācis
2012/5/30 andy pugh bodge...@gmail.com: On 30 May 2012 03:42, Jon Elson el...@pico-systems.com wrote: When the home command is given, both motors are given identical step rates toward the home position.  When the first motor trips the home switch, the step pulses are interrupted to that

Re: [Emc-users] Question with gantry setup

2012-05-30 Thread andy pugh
On 30 May 2012 10:50, Viesturs Lācis viesturs.la...@gmail.com wrote: 2012/5/30 andy pugh bodge...@gmail.com: I think that one would have to do more than simply interrupt the steps, as that would cause the motor to slip And why would it do so? Because the motor is spinning and the gantry is

Re: [Emc-users] Question with gantry setup

2012-05-30 Thread Viesturs Lācis
2012/5/30 andy pugh bodge...@gmail.com: On 30 May 2012 10:50, Viesturs Lācis viesturs.la...@gmail.com wrote: 2012/5/30 andy pugh bodge...@gmail.com: I think that one would have to do more than simply interrupt the steps, as that would cause the motor to slip And why would it do so?

Re: [Emc-users] Question with gantry setup

2012-05-30 Thread andy pugh
On 30 May 2012 11:15, Viesturs Lācis viesturs.la...@gmail.com wrote: I am sure that it would work, if it is done the way I suggest: 1) home gantry with slave connected to a home switch on slave end; 2) when it is stopped; disconnect slave step signal and change X home switch to one on master

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
I don't have a pole can... I live out in the woods and all the services are underground and I'm serviced with a pad mounted transformer that only feeds my house and shop. I have a 200 amp service that is split between my house and the shop and both have 200 amp panels with proper size wire. I

Re: [Emc-users] Question with gantry setup

2012-05-30 Thread Viesturs Lācis
2012/5/30 andy pugh bodge...@gmail.com: On 30 May 2012 11:15, Viesturs Lācis viesturs.la...@gmail.com wrote: I am sure that it would work, if it is done the way I suggest: 1) home gantry with slave connected to a home switch on slave end; 2) when it is stopped; disconnect slave step signal

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
Yes, after running the generator on the 208 taps I forgot they were on there when I did my phase converter work over. Today I plan on trying to contact Siemens tech support and see if they can offer up some advice. I'm located in swamp east Missouri... John On 5/29/2012 2:55 PM, gene heskett

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
The largest motor on the VMC is 20 amps so the name plate says... and I assume that is the spindle servo. John On 5/29/2012 9:34 PM, Jon Elson wrote: gene heskett wrote: So, we're probably back to an about 30 KVA isolation transformer. Oh, MY! If he needs a 30 KVA transformer, then he

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
Phase to phase currently is A-B=244, A-C=253, B-C=253 with A and B are the mains and C the generated leg. From what I gather reading about RPC you won't get A-C and B-C to be the same as A-B and they will be higher. Best case seems to be getting A-C = B-C from what I read and getting the amps

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
The spindle only trips during acceleration and that is a short duration of time. When monitoring the DC buss with the Fluke meter it is rock steady at 600-601 up to the point the drive shuts down. I just discovered last night that my neighbor is a wiz at running a scope and he said wow you

Re: [Emc-users] cutter radius compensation versus tool table data

2012-05-30 Thread charles green
the basis of a circle (n-sphere) is a center point, and a distance from the center point. the diameter of a circle is an artifact of measurement. the vertex of a spinning cutter edge travels around a center at some radial distance. a stationary lathe cutter has an edge vertex that moves

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
Right now the 10hp RPC is adjusted with the caps without a load to give me A-B=244, A-C=253, B-C=253. As I understand it that is about as good as you can expect from a RPC. I still need to check it under load and perhaps the idea from the past about having an Ardunio or something switch in

Re: [Emc-users] Question with gantry setup

2012-05-30 Thread andy pugh
On 30 May 2012 12:10, Viesturs Lācis viesturs.la...@gmail.com wrote: The problem is that, while one stepgen would be disabled, axis.0.pos-cmd would change its value and, when the stepgen would be enabled again, it would jump to the axis.0.pos-cmd, which is exactly what we do not want it to

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread andy pugh
On 30 May 2012 12:26, John Thornton bjt...@gmail.com wrote: I just discovered last night that my neighbor is a wiz at running a scope This Wiz? http://www.eeggs.com/items/11778.html -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread gene heskett
On Wednesday, May 30, 2012 07:15:28 AM John Thornton did opine: I don't have a pole can... I live out in the woods and all the services are underground and I'm serviced with a pad mounted transformer that only feeds my house and shop. I have a 200 amp service that is split between my house

Re: [Emc-users] Question with gantry setup

2012-05-30 Thread Viesturs Lācis
2012/5/30 andy pugh bodge...@gmail.com: On 30 May 2012 12:10, Viesturs Lācis viesturs.la...@gmail.com wrote: The problem is that, while one stepgen would be disabled, axis.0.pos-cmd would change its value and, when the stepgen would be enabled again, it would jump to the axis.0.pos-cmd, which

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
Neat!, but a different wiz... John On 5/30/2012 6:49 AM, andy pugh wrote: On 30 May 2012 12:26, John Thorntonbjt...@gmail.com wrote: I just discovered last night that my neighbor is a wiz at running a scope This Wiz? http://www.eeggs.com/items/11778.html

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread Viesturs Lācis
I am helping Dennis out and reposting his message to mailing list: == Hi All, I have been following this thread and want to put in my 2 cents. I had the same issue as John with my Bridgeport Interact 412-V. It's spindle is

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread gene heskett
On Wednesday, May 30, 2012 08:01:58 AM John Thornton did opine: Yes, after running the generator on the 208 taps I forgot they were on there when I did my phase converter work over. Today I plan on trying to contact Siemens tech support and see if they can offer up some advice. I'm located

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread gene heskett
On Wednesday, May 30, 2012 08:14:46 AM John Thornton did opine: The largest motor on the VMC is 20 amps so the name plate says... and I assume that is the spindle servo. John I think there are some KW to horsepower conversions in the handbook. I'll look when I'm awake for the day.

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
Hi Dennis, I have a 2.5 diameter facing mill that I use and I don't notice any difference when using that. My machine lights do not dim during acceleration which I assume is a good thing. I'm in the same canoe as you with 240v single phase my only option to work with. Before all the

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread andy pugh
On 30 May 2012 13:45, John Thornton bjt...@gmail.com wrote: Before all the experiments I could get 0 to 2k with no problems and would structure my programs around that or use the G4 pause and ramp up to the rpm I wanted above 2k. net motion.spindle-speed-out = limit2.in ? -- atp If you

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
A subroutine using a coordinate system rotate might be the simplest method. Establish the center of your disk as X and Y0 and do a G10 L2 R between slots. Something like the following partly tested code should do the trick. Position tool at safe point #current-r = 0 G10 L2 P1 R#current-r

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread Dave
Around here (Indiana) they put the HV disconnect on the pole that feeds the underground line that runs to a pad mount tranformer. That way if a short develops in HV feed to the pad transformer, the switch/breaker kicks out. I always figure about 1 KW per HP, but with these more efficient

Re: [Emc-users] 3D Printer Mods?

2012-05-30 Thread rob c
Yes Adam, EMC is Linux CNC. It is a Linux Ubuntu OS with EMC incorperated into it. Unfortunatly this is not an Electronics solution, it is however a part of the software solution. You still need a way to interface the outside world with it, and that is where the problem lies when trying to

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread Alex Joni
http://en.wikipedia.org/wiki/RC_circuit from there: http://en.wikipedia.org/wiki/File:RC_Series_Filter_(with_V%26I_Labels).svg and the response: http://en.wikipedia.org/wiki/File:Series_RC_capacitor_voltage.svg Regards, Alex - Original Message - From: John Thornton bjt...@gmail.com

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
Only on a LinuxCNC machine will that work... this one is still the DX32 control. John On 5/30/2012 8:07 AM, andy pugh wrote: On 30 May 2012 13:45, John Thorntonbjt...@gmail.com wrote: Before all the experiments I could get 0 to 2k with no problems and would structure my programs around

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
Thanks Alex John On 5/30/2012 7:55 AM, Alex Joni wrote: http://en.wikipedia.org/wiki/RC_circuit from there: http://en.wikipedia.org/wiki/File:RC_Series_Filter_(with_V%26I_Labels).svg and the response: http://en.wikipedia.org/wiki/File:Series_RC_capacitor_voltage.svg Regards, Alex

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread andy pugh
On 30 May 2012 14:55, John Thornton bjt...@gmail.com wrote: Only on a LinuxCNC machine will that work... this one is still the DX32 control. Ah, well, in that case DX32 support is over there = :-) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread gene heskett
On Wednesday, May 30, 2012 10:58:17 AM Alex Joni did opine: http://en.wikipedia.org/wiki/RC_circuit from there: http://en.wikipedia.org/wiki/File:RC_Series_Filter_(with_V%26I_Labels).s vg and the response: http://en.wikipedia.org/wiki/File:Series_RC_capacitor_voltage.svg Regards,

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
Dave and everyone who has been following this, I just got off the phone with Siemens tech support and Our systems don't run well on phase converters. was the main theme of the conversation as well as we can't run on a Delta system because we need the ground reference I think he said.

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Kent A. Reed
On 5/30/2012 3:51 AM, Roland Jollivet wrote: Hi Alex Do you mind saying what you are printing, and if you feel the printing is a worthwhile exercise? I've been looking at different printers for months, but they only seem to be able to produce junk. Cnc'ing it out of a block of plastic looks

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread gene heskett
On Wednesday, May 30, 2012 11:31:42 AM andy pugh did opine: On 30 May 2012 13:45, John Thornton bjt...@gmail.com wrote: Before all the experiments I could get 0 to 2k with no problems and would structure my programs around that or use the G4 pause and ramp up to the rpm I wanted above 2k.

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread Dave
Our systems don't run well on phase converters. They didn't have any suggestions to make it run better via tweaks to the 611 ?? Perhaps none are available. I bet that drive is going into shutdown mode based on safety shutdown circuits - loss of phase, etc. Siemens does an excellent job of

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Viesturs Lācis
2012/5/30 Kent A. Reed kentallanr...@gmail.com: If you want really elegant DIY output, check out what's happening with photo-initiated polymer resin-based printers, for example, http://b9creator.com/ I have always wondered, what is the tensile strength of these plastics. Is there a place,

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread gene heskett
On Wednesday, May 30, 2012 12:06:22 PM John Thornton did opine: A subroutine using a coordinate system rotate might be the simplest method. Establish the center of your disk as X and Y0 and do a G10 L2 R between slots. Something like the following partly tested code should do the trick. I

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread andy pugh
On 30 May 2012 17:15, Dave e...@dc9.tzo.com wrote: Perhaps I missed something;  Did you figure out if that transformer in your machine is a Delta-Wye transformer or not? It seems to be an autotransformer with a common centre tap (pretty much identical to the hypothetical one I described).

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread gene heskett
On Wednesday, May 30, 2012 12:35:27 PM John Thornton did opine: Dave and everyone who has been following this, I just got off the phone with Siemens tech support and Our systems don't run well on phase converters. was the main theme of the conversation as well as we can't run on a Delta

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread gene heskett
On Wednesday, May 30, 2012 12:40:47 PM Kent A. Reed did opine: On 5/30/2012 3:51 AM, Roland Jollivet wrote: Hi Alex Do you mind saying what you are printing, and if you feel the printing is a worthwhile exercise? I've been looking at different printers for months, but they only seem

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread gene heskett
On Wednesday, May 30, 2012 12:43:24 PM Dave did opine: Our systems don't run well on phase converters. They didn't have any suggestions to make it run better via tweaks to the 611 ??Perhaps none are available. I bet that drive is going into shutdown mode based on safety shutdown

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Viesturs Lācis
2012/5/30 gene heskett ghesk...@wdtv.com: Looks like that site is down now. It works for me. It is little slow though... -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Live

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread gene heskett
On Wednesday, May 30, 2012 12:57:02 PM Viesturs Lācis did opine: 2012/5/30 gene heskett ghesk...@wdtv.com: Looks like that site is down now. It works for me. It is little slow though... I gave it about a minute, no incoming traffic on the switches leds. Cheers, Gene -- There are four

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Kent A. Reed
On 5/30/2012 12:20 PM, Viesturs Lācis wrote: 2012/5/30 Kent A. Reedkentallanr...@gmail.com: If you want really elegant DIY output, check out what's happening with photo-initiated polymer resin-based printers, for example, http://b9creator.com/ I have always wondered, what is the tensile

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Joseph Chiu
Having a ToM 3D printer, and having done hobbyist CNC work with a 3-axis mill, I have to say that FDM 3D printing lets me try out a number of ideas that are much harder or impossible to cut with a 3-axis CNC. The most obvious examples are cutting figurines, where there are features that would not

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
The stepup transformer as far as I can tell is a WYE input autotransformer. I'm guessing at this point I'll start looking for a delta to WYE transformer with a grounded secondary or pick up a 3 phase generator. A small thing I discovered today while messing about is the 611 will run the

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread Dave
On 5/30/2012 12:34 PM, andy pugh wrote: On 30 May 2012 17:15, Davee...@dc9.tzo.com wrote: Perhaps I missed something; Did you figure out if that transformer in your machine is a Delta-Wye transformer or not? It seems to be an autotransformer with a common centre tap (pretty

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
On 5/30/2012 11:30 AM, gene heskett wrote: On Wednesday, May 30, 2012 12:06:22 PM John Thornton did opine: A subroutine using a coordinate system rotate might be the simplest method. Establish the center of your disk as X and Y0 and do a G10 L2 R between slots. Something like the following

[Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Roland Jollivet
On 30 May 2012 19:06, Joseph Chiu joec...@joechiu.com wrote: Having a ToM 3D printer, and having done hobbyist CNC work with a 3-axis mill, I have to say that FDM 3D printing lets me try out a number of ideas that are much harder or impossible to cut with a 3-axis CNC. The most obvious

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
I'm guessing I don't need near that size perhaps 9-10 KVA? John On 5/30/2012 12:20 PM, Dave wrote: On 5/30/2012 12:34 PM, andy pugh wrote: On 30 May 2012 17:15, Davee...@dc9.tzo.com wrote: Perhaps I missed something; Did you figure out if that transformer in your machine is a Delta-Wye

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread Jon Elson
John Thornton wrote: The largest motor on the VMC is 20 amps so the name plate says... and I assume that is the spindle servo. Hmm, a 5.5 KVA motor should only draw 13 Amps on 240 3-phase. Somebody was talking about 25 KVA transformers yesterday. Jon

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread gene heskett
On Wednesday, May 30, 2012 01:46:13 PM John Thornton did opine: On 5/30/2012 11:30 AM, gene heskett wrote: On Wednesday, May 30, 2012 12:06:22 PM John Thornton did opine: A subroutine using a coordinate system rotate might be the simplest method. Establish the center of your disk as X and

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread Jon Elson
Viesturs Lācis wrote: found the spindle control signal was an analog 0-10V line. If I slowed the ramp up and ramp down command to the spindle controller it would perform the same function as gradually changing the RPM in code. This is a great point, if John can slow down the rate the

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread Jon Elson
John Thornton wrote: The resistor/capacitor would be a low cost experiment. How do you calculate what the values are for the resistor and the cap? Did you put the resistor in series with one of the control lines? Does the cap connect to the upstream side or the downstream side of the

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread andy pugh
On 30 May 2012 18:31, John Thornton bjt...@gmail.com wrote: I'm guessing I don't need near that size perhaps 9-10 KVA? There are several at $300 or so, but I got bore of squinitng at ratings plates to find a step-up version. There is this one, brand-new for $1000

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread Jon Elson
John Thornton wrote: I just got off the phone with Siemens tech support and Our systems don't run well on phase converters. Well, given the way this system works, I'm not surprised by his comment. But, it is fairly close. You need to get into it and see WHICH trip it is getting. There

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Jon Elson
I am in another group that has guys working on using a DLP computer projector to selectively cure a liquid resin one layer at a time. While this is not something that can be strapped to the spindle of a CNC mill, it appears to be a very viable technology for 3D fabrication. Some of the

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Viesturs Lācis
2012/5/30 Roland Jollivet roland.jolli...@gmail.com: The thing is, what do you do with these parts? While I fully appreciate the value of the learning, especially for children, people using EMC are perforce versed in CNC milling. Yes, can I ask 3D printer owners to share the practical use of

Re: [Emc-users] Question with gantry setup

2012-05-30 Thread Viesturs Lācis
2012/5/30 Jon Elson el...@pico-systems.com: On 30 May 2012 12:10, Viesturs Lācis viesturs.la...@gmail.com wrote: The problem is that, while one stepgen would be disabled, axis.0.pos-cmd would change its value and, when the stepgen would be enabled again, it would jump to the axis.0.pos-cmd,

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
On 5/30/2012 12:56 PM, gene heskett wrote: On Wednesday, May 30, 2012 01:46:13 PM John Thornton did opine: On 5/30/2012 11:30 AM, gene heskett wrote: On Wednesday, May 30, 2012 12:06:22 PM John Thornton did opine: A subroutine using a coordinate system rotate might be the simplest method.

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
Unfortunately it is still running the old DX32 control. John On 5/30/2012 1:00 PM, Jon Elson wrote: John Thornton wrote: The resistor/capacitor would be a low cost experiment. How do you calculate what the values are for the resistor and the cap? Did you put the resistor in series with one

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread andy pugh
On 30 May 2012 19:19, Viesturs Lācis viesturs.la...@gmail.com wrote: Yes, can I ask 3D printer owners to share the practical use of those prints? One use is for casting patterns. The pannier mounts for my bike are cast in brass from a 3D-printed pattern. -- atp If you can't fix it, you don't

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread dave
On Wed, 30 May 2012 11:55:49 -0400 Kent A. Reed kentallanr...@gmail.com wrote: On 5/30/2012 3:51 AM, Roland Jollivet wrote: Hi Alex Do you mind saying what you are printing, and if you feel the printing is a worthwhile exercise? I've been looking at different printers for months, but

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread andy pugh
On 30 May 2012 19:40, dave dengv...@charter.net wrote: http://b9creator.com/ That looks like the best technology I've seen. To the extent that I did the price calculation into £ to see if I wanted one. There was a guy on the IRC last night looking at a similar approach. -- atp If you can't

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Kent A. Reed
On 5/30/2012 2:40 PM, dave wrote: On Wed, 30 May 2012 11:55:49 -0400 Kent A. Reedkentallanr...@gmail.com wrote: ... If you want really elegant DIY output, check out what's happening with photo-initiated polymer resin-based printers, for example, http://b9creator.com/ That looks like the

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread N. Christopher Perry
I've professionally used parts made by these processes for non-critical brackets, rough as-cast like blanks for pneumatic manifolds (that only required reaming operations to be put in service), investments for castings, etc. Given that I can have a serviceable part in 24 hours, given an

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Kent A. Reed
On 5/30/2012 2:19 PM, Viesturs Lācis wrote: 2012/5/30 Roland Jollivetroland.jolli...@gmail.com: The thing is, what do you do with these parts? While I fully appreciate the value of the learning, especially for children, people using EMC are perforce versed in CNC milling. Yes, can I ask 3D

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Charles Steinkuehler
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 5/30/2012 1:19 PM, Viesturs Lācis wrote: Is there any practical use of 3D prints? Can it be useful to make something like cases for MPG pendants or something else? Are parts for your home-made fusion reactor practical enough? :)

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread andy pugh
On 30 May 2012 19:53, N. Christopher Perry n_christopher_pe...@me.com wrote: I've professionally used parts made by these processes for non-critical brackets, rough as-cast like blanks for pneumatic manifolds Oh, yes. At work they print all sorts of parts. Complete front grills, fully

[Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Roland Jollivet
On 30 May 2012 21:00, andy pugh bodge...@gmail.com wrote: On 30 May 2012 19:53, N. Christopher Perry n_christopher_pe...@me.com wrote: I've professionally used parts made by these processes for non-critical brackets, rough as-cast like blanks for pneumatic manifolds Oh, yes. At work they

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
When we ran the generator we connected the 3 hots as usual and I don't recall if we grounded it or not. I only had 3 connectors large enough for the leads coming out of the generator so I'm sure we didn't connect the ground to the neutral of the generator.

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Tim James
I am involved with the automotive design industry and 3D printers are used extensively for the manufacture of small parts for full size and scale automotive models that cannot be machined from clay.. Traditionally we have manufactured clay milling machines but there is an interest in large 3D

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread andy pugh
On 30 May 2012 20:10, Roland Jollivet roland.jolli...@gmail.com wrote: Oh, yes. At work they print all sorts of parts. With filament ? No, and that is why I didn't immediately mention it. They have laser/powder, laser/liquid and inkjet/UV machines for plastics. However, I did see a

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Jack Coats
In college my son had 3D printing capability for 'free'. But their machine shop had 3D printers (filament, powder deposition, etc versions), laser cutters, CNC machines, ... all the toys I wish I could have access to. They had standard over night delivery from Grainger and Small Parts for

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread Dave
I would look for something 9 KVA or larger. Going bigger really doesn't hurt, and if you want to use the full capabilites of the machine and add up a 7.5 KW spindle, then add in say .75 KW for each axis (2.25 KW), then add in any other motors coolant pump, rtc, then bump that up by 3-4 you

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread andy pugh
On 30 May 2012 20:19, John Thornton bjt...@gmail.com wrote: In that manual after a fault I have 4 status LED's lit up. On page 6-143 the bottom 4 LED's are lit. Which one caused the fault I can't tell. Line Supply Fault and DC Overvoltage sound possible. The machine schematic does not show a

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Joseph Chiu
Speaking from my own experience, I've made a number of fun or educational toy parts and figurines for my kids; I made some camera accessories for my wife (couple of lens cap holders, a simple slip-on macro lens for taking close-up pictures). I also used 3d printed parts to do some stand in parts

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Mark Cason
On 05/30/2012 02:29 PM, andy pugh wrote: On 30 May 2012 20:10, Roland Jollivetroland.jolli...@gmail.com wrote: Oh, yes. At work they print all sorts of parts. With filament ? No, and that is why I didn't immediately mention it. They have laser/powder, laser/liquid and inkjet/UV machines for

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread andy pugh
On 30 May 2012 20:32, Jack Coats j...@coats.org wrote: IMHO, every technology (from clay sculpting and lost wax, pouring babbit bearings, to 3D modeling and production of today) has its benefits and issues. I poured a white-metal big-end bearing for our 1916 fire engine earlier this year. So

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread John Prentice
Greetings - Original Message - From: Viesturs Lacis viesturs.la...@gmail.com 2012/5/30 Roland Jollivet roland.jolli...@gmail.com: The thing is, what do you do with these parts? While I fully appreciate the value of the learning, especially for children, people using EMC are

[Emc-users] Usefulness - was Re: OT: 3D Printer Mods?

2012-05-30 Thread John Stewart
Kent; Take the sunglasses off. (smile) On 2012-05-30, at 2:56 PM, Kent A. Reed wrote: These exchanges are beginning to remind me of the people would wander into microcomputer stores back in the late 1970s/ early 1980s and demand that the store staff convince them why they should buy a

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread Dave
I think the reason why they want a grounded neutral is to keep the phase voltages controlled relative to a ground reference. The drive chassis usually has several large ground lugs on it which are suppose to be tied to earth ground as would be the neutral. An ungrounded Delta power system can

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread John Thornton
Those both show an isolating transformer with a bonded neutral on the secondary side as well as a line filter. Is the isolating transformer depicted a delta wye? John On 5/30/2012 2:37 PM, andy pugh wrote: On 30 May 2012 20:19, John Thorntonbjt...@gmail.com wrote: In that manual after a

Re: [Emc-users] Usefulness - was Re: OT: 3D Printer Mods?

2012-05-30 Thread Viesturs Lācis
2012/5/30 John Stewart alex.stew...@crc.ca: Kent; Take the sunglasses off. (smile) On 2012-05-30, at 2:56 PM, Kent A. Reed wrote: These exchanges are beginning to remind me of the people would wander into microcomputer stores back in the late 1970s/ early 1980s and demand that the store

Re: [Emc-users] Usefulness - was Re: OT: 3D Printer Mods?

2012-05-30 Thread Joseph Chiu
John, I can tell you for sure that the parts end up being much stronger than you might at first guess from being printed hollow. That isn't to say that they are indestructable -- but I was skeptical at first, too. The application you mentioned is actually perfect for 3D printing -- the various

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread andy pugh
On 30 May 2012 21:09, John Thornton bjt...@gmail.com wrote: Those both show an isolating transformer with a bonded neutral on the secondary side as well as a line filter. Is the isolating transformer depicted a delta wye? It's drawn as a Wye-Wye, but I don't think that is at all important

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread N. Christopher Perry
On 30 May 2012 21:00, andy pugh bodge...@gmail.com wrote: On 30 May 2012 19:53, N. Christopher Perry n_christopher_pe...@me.com wrote: I've professionally used parts made by these processes for non-critical brackets, rough as-cast like blanks for pneumatic manifolds Oh, yes. At work

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread ceenbot
Hi John, Sorry for the delay - just got back from a meeting. I also updated my email address so I can post again!! My ISP moved to Google services and my email address changed. The EMC list had blocked posts sent from my new address. I'm guessing your 2.5 facing mill may not be rated at

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread rob c
Roland, in your view do you see EMC being a CAM software? It actually isn't. Also you don't necessarily produce better parts using a 2.5D mill, remember a 3D printer is a Milling machine, the only thing different being the spindle is now a deposition head of some form. Really you will only

Re: [Emc-users] Usefulness - was Re: OT: 3D Printer Mods?

2012-05-30 Thread Michael Haberler
Am 30.05.2012 um 21:55 schrieb John Stewart: Kent; .. So while I wander past the rapidly increasing number of 3D printers at SIGGRAPH, for instance, I currently can't find a use for one that I can afford to have @home. might be the wrong trade show have a look dental work, or moldmaking

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread dave
On Wed, 30 May 2012 14:44:38 -0700 rob c crob...@live.ca wrote: Roland, in your view do you see EMC being a CAM software? It actually isn't. Also you don't necessarily produce better parts using a 2.5D mill, remember a 3D printer is a Milling machine, the only thing different being the

Re: [Emc-users] Usefulness - was Re: OT: 3D Printer Mods?

2012-05-30 Thread rob c
Try the RepRap open source printer, last i checked you can buy a fully built machine for about $600. Also it is open source. Have you ever broken a plastic part? With a 3D printer you can fix things, dream and make your dream real. From: mai...@mah.priv.at Date: Thu, 31 May 2012 01:05:10

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread fritz
On 05/29/2012 12:07 PM, andy pugh wrote: On 29 May 2012 17:00, John Thorntonbjt...@gmail.com wrote: N to each X is.1 ohm X to X is .2 ohm That sounds like the tapping you needed. I would say earth it, put on rubber boots, rubber gloves and operate the machine with a long, dry stick :-) As

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread Jon Elson
John Thornton wrote: From the tone of the tech's voice he hears this problem a lot with 611 drive and rotary phase converters. Well, have you checked on CNCZone for any experiences with this system? maybe somebody there knows how to fix this problem. there are some VERY savvy machine

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread Jon Elson
fritz wrote: As an electrician, I should now interject that a neutral should only be bonded at the point of distribution (the breaker panel or upstream transformer). Grounding a neutral anywhere else makes for strange problems and stray currents on the ground. People often falsely assume

Re: [Emc-users] Usefulness - was Re: OT: 3D Printer Mods?

2012-05-30 Thread N. Christopher Perry
Or hearing aid body. N. Christopher Perry On May 30, 2012, at 19:05, Michael Haberler mai...@mah.priv.at wrote: Am 30.05.2012 um 21:55 schrieb John Stewart: Kent; .. So while I wander past the rapidly increasing number of 3D printers at SIGGRAPH, for instance, I currently can't find a

Re: [Emc-users] OT: 3D Printer Mods?

2012-05-30 Thread Alex Hunt
Hi Roland, To the average machinist - ok, ALL machinists, the parts produced by homebuilt FDM machines look awful. There is visible banding along the Z-axis, variations in the amount of plastic extruded, occasional slumping at overhangs, and places where support material had to be snapped off.

Re: [Emc-users] Commutating Reactor

2012-05-30 Thread gene heskett
On Wednesday, May 30, 2012 11:15:38 PM fritz did opine: On 05/29/2012 12:07 PM, andy pugh wrote: On 29 May 2012 17:00, John Thorntonbjt...@gmail.com wrote: N to each X is.1 ohm X to X is .2 ohm That sounds like the tapping you needed. I would say earth it, put on rubber boots,

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