Re: [CAD_CAM_EDM_DRO] Digest Number 2887
Posted by
thomasm923@a...
on 2003-01-26 06:57:55 UTC
In a message dated 1/26/03 4:51:09 AM Eastern Standard Time,
CAD_CAM_EDM_DRO@yahoogroups.com writes:
CAD_CAM_EDM_DRO@yahoogroups.com writes:
> Subj: [CAD_CAM_EDM_DRO] Digest Number 2887CAD_CAM_EDM_DRO@yahoogroups.com</A>
> Date: 1/26/03 4:51:09 AM Eastern Standard Time
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> Reply-to: <A HREF="mailto:CAD_CAM_EDM_DRO@yahoogroups.com">
> To: CAD_CAM_EDM_DRO@yahoogroups.comtimg@
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
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> ktmarketing.comOT
> Moderator: pentam@... indigo_red@... [Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto: aol://5863:126/rec.
> crafts.metalworking or go thru Google.com to reach it if you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
> sister site to the CCED group, as many of the same members are there, for
> subjects, that are not allowed on the CCED list.<joachim.reif@telia.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
> ------------------------------------------------------------------------
>
> There are 23 messages in this issue.
>
> Topics in this digest:
>
> 1. Re: Re: More EMC Conversations w/ Controller Boards
> From: Paul <no.spam27@...>
> 2. Experiance milling PCB
> From: "Joachim Reif <joachim.reif@...>"
> com><oreminer2000@yahoo.
> 3. Re: Sherline quick change - the problem
> From: "Marcus & Eva" <implmex@...>
> 4. Re: Re: Re: EMC, ISA and other Questions...
> From: Ray Henry <rehenry@...>
> 5. Re: Sherline quick change - the problem
> From: "galt1x" <galt1x@...>
> 6. Voltage for Full Stack NEMA 23 stepper?
> From: "bereshr1 <bereshr1@...>" <bereshr1@...>
> 7. RE: Voltage for Full Stack NEMA 23 stepper?
> From: "Tim Goldstein" <timg@...>
> 8. Re: Voltage for Full Stack NEMA 23 stepper?
> From: "jeffalanp <xylotex@...>" <xylotex@...>
> 9. Re: Re: Voltage for Full Stack NEMA 23 stepper?
> From: Marv Frankel <dcdziner@...>
> 10. Re: Experiance milling PCB
> From: "turbulatordude <davemucha@...>" <davemucha@...>
> 11. RE: Re: Voltage for Full Stack NEMA 23 stepper?
> From: "Tim Goldstein" <timg@...>
> 12. Unipolar drivers
> From: hllrsr@...
> 13. cnc viewer
> From: "demino3 <demino3@...>" <demino3@...>
> 14. RE: cnc viewer
> From: "Lloyd Leung" <lloyd@...>
> 15. Poor Mans Cnc Router
> From: "dakota8833 <dakota8833@...>" <dakota8833@
> bellsouth.net>
> 16. Re: Sherline quick change - the problem
> From: Raymond Heckert <jnr@...>
> 17. Re: operating temp of stepper motors
> From: Raymond Heckert <jnr@...>
> 18. Proxxon MF CNC conversion
> From: "jeffalanp <xylotex@...>" <xylotex@...>
> 19. Re: operating temp of stepper motors
> From: JanRwl@...
> 20. Re: 4th axis and EMC
> From: EdFanta <atex57@...>
> 21. RE: operating temp of stepper motors
> From: "Tim Goldstein" <timg@...>
> 22. Re: Experiance milling PCB
> From: JanRwl@...
> 23. Wire EDM Power Supplies
> From: "oreminer2000 <oreminer2000@...>"
> com>had
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 1
> Date: Sat, 25 Jan 2003 13:50:50 +0000
> From: Paul <no.spam27@...>
> Subject: Re: Re: More EMC Conversations w/ Controller Boards
>
>
> emc/src/drivers/extintf.h lists all the low level functions - Not all of
> them
> are used. Some additional notes can be found at
> http://www.linuxcnc.org/BDI/RPMS/emc_source.pdf
>
> Regards, Paul.
>
> On Saturday 25 Jan 2003 8:51 am, "jackw19x wrote:
> > I second that emotion--any pointers would be most welcome. My thought
> > was to look at the STG code together with the hardware manual plus
> > the corresponding manual for the PowerDAQ card I've got and ...
> >
> > Since the cards aren't very different, presumably the drivers
> > shouldn't be very different. Continuous functions map open sets to
> > open sets--right?
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, Raymond Heckert <jnr@a...>
> > wrote:
> > > 'Might be trivial to you, but it's Greek (maybe geek) to me. Where
> > > can I learn more about writing my own hardware drivers?
>
> --
>
> The spamming scumbags have won - A new email account is now in use with a
> mangled return address. Send replies to :
> paul AT bdiemc DOT fslife DOT co DOT uk
> Or :
> bdi-emc AT ntlworld DOT com
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 2
> Date: Sat, 25 Jan 2003 16:26:34 -0000
> From: "Joachim Reif <joachim.reif@...>" <joachim.reif@...>
> Subject: Experiance milling PCB
>
> Any one know anything about milling PCB. Tried it today and realised
> that the cutter is very important. Anyone know were I can read about
> it some more.
>
> Joachim Reif
> Sweden
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 3
> Date: Sat, 25 Jan 2003 10:03:12 -0800
> From: "Marcus & Eva" <implmex@...>
> Subject: Re: Sherline quick change - the problem
>
> Hi All:
> When I was at Sherline for a visit, I saw a spindle that Joe Martin
> made up for ER 16 collets.option.
> I don't know if he was just toying with it, or if he offers it as an
> That taper is 8 deg per side and is self releasing.OT
> Maybe Joe will still offer the spindle for those who are interested.
> Worth a phone call to Sherline.
> If he says NO, making up a new spindle is not rocket science.
> A chunk of Leadloy and half a day should set you right.
> Cheers
>
> Marcus
> ----- Original Message -----
> From: <joevicar3@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Friday, January 24, 2003 8:15 PM
> Subject: [CAD_CAM_EDM_DRO] Sherline quick change - the problem
>
>
> > Guys, the problem is that the morse taper is not self releasing. All
> > of your ideas are great until you try to take the tool out, it won't
> > come out without a tap.
> >
> > All tool changing machines use self releasing tapers NMTB 30-40-50
> > and some other styles. Until you tackle this basic problem you can't
> > move on.
> >
> > Need a custom spindle with a different taper. There are already
> > standard sizes that would work and are already used on other mini
> > machines.
> >
> > Then it would be easy to design and build an ATC for your Sherline
> > which would be pretty cool.
> >
> > Joe V.
> >
> >
> > Addresses:
> > FAQ: http://www.ktmarketing.com/faq.html
> > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> > Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
> >
> > Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> > Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> > List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
> timg@...
> > Moderator: pentam@... indigo_red@... [Moderators]
> > URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> >
> > OFF Topic POSTS: General Machining
> > If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
> you have trouble.
> > http://www.metalworking.com/news_servers.html
> >
> > http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
> sister site to the CCED group, as many of the same members are there, for
> subjects, that are not allowed on the CCED list.THEM.
> >
> > NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> > bill
> > List Mom
> > List Owner
> >
> >
> >
> > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
> >
> >
>
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 4
> Date: Sat, 25 Jan 2003 15:31:18 -0600
> From: Ray Henry <rehenry@...>
> Subject: Re: Re: Re: EMC, ISA and other Questions...
>
>
> Art
>
> I'm wondering if part of the problems that you note with the rs274
> interpreter were my fault. When you asked me for the six axis stuff long
> ago, the files that I sent you were a copy of Tom's pre-release -- almost
> an alpha. They probably had several bugs still to be worked out before
> the release.
>
> Ray
>
>
> > From: Art <fenerty@...>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 5
> Date: Sat, 25 Jan 2003 13:43:20 -0800
> From: "galt1x" <galt1x@...>
> Subject: Re: Sherline quick change - the problem
>
> Self releasing should be called easy releasing even high priced
> spindles allow for a small mechanical push out to break up surface
> tension caused by coolant etc.
>
> Paul
>
> ----- Original Message -----
> From: "Marcus & Eva" <implmex@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Saturday, January 25, 2003 10:03 AM
> Subject: Re: [CAD_CAM_EDM_DRO] Sherline quick change - the problem
>
>
> > Hi All:
> > When I was at Sherline for a visit, I saw a spindle that Joe Martin
> had
> > made up for ER 16 collets.
> > I don't know if he was just toying with it, or if he offers it as an
> option.
> > That taper is 8 deg per side and is self releasing.
> > Maybe Joe will still offer the spindle for those who are interested.
> > Worth a phone call to Sherline.
> > If he says NO, making up a new spindle is not rocket science.
> > A chunk of Leadloy and half a day should set you right.
> > Cheers
> >
> > Marcus
> > ----- Original Message -----
> > From: <joevicar3@...>
> > To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> > Sent: Friday, January 24, 2003 8:15 PM
> > Subject: [CAD_CAM_EDM_DRO] Sherline quick change - the problem
> >
> >
> > > Guys, the problem is that the morse taper is not self releasing. All
> > > of your ideas are great until you try to take the tool out, it won't
> > > come out without a tap.
> > >
> > > All tool changing machines use self releasing tapers NMTB 30-40-50
> > > and some other styles. Until you tackle this basic problem you can't
> > > move on.
> > >
> > > Need a custom spindle with a different taper. There are already
> > > standard sizes that would work and are already used on other mini
> > > machines.
> > >
> > > Then it would be easy to design and build an ATC for your Sherline
> > > which would be pretty cool.
> > >
> > > Joe V.
> > >
> > >
> > > Addresses:
> > > FAQ: http://www.ktmarketing.com/faq.html
> > > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> > > Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
> > >
> > > Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> > > Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> > > List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
> > timg@...
> > > Moderator: pentam@... indigo_red@... [Moderators]
> > > URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> > >
> > > OFF Topic POSTS: General Machining
> > > If you wish to post on unlimited OT subjects goto:
> > aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it
> if
> > you have trouble.
> > > http://www.metalworking.com/news_servers.html
> > >
> > > http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
> > sister site to the CCED group, as many of the same members are there, for
> OT
> > subjects, that are not allowed on the CCED list.
> > >
> > > NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING
> > DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........OT
> > > bill
> > > List Mom
> > > List Owner
> > >
> > >
> > >
> > > Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
> > >
> > >
> >
> >
> >
> > Addresses:
> > FAQ: http://www.ktmarketing.com/faq.html
> > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> > Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
> >
> > Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> > Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> > List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
> timg@...
> > Moderator: pentam@... indigo_red@... [Moderators]
> > URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> >
> > OFF Topic POSTS: General Machining
> > If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
> you have trouble.
> > http://www.metalworking.com/news_servers.html
> >
> > http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
> sister site to the CCED group, as many of the same members are there, for
> subjects, that are not allowed on the CCED list.OT
> >
> > NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> > bill
> > List Mom
> > List Owner
> >
> >
> >
> > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
> >
> >
> >
>
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 6
> Date: Sat, 25 Jan 2003 20:48:15 -0000
> From: "bereshr1 <bereshr1@...>" <bereshr1@...>
> Subject: Voltage for Full Stack NEMA 23 stepper?
>
> Hi There.
>
> So in the hunting and gathering process for my future CNC router /
> mill I stalked and killed three NEMA 23 stepper motors. They are
> spec'd out as Pacific Scientific Powermax II motors - 8-lead. I am
> planning on running them bipolar (for nice, and mean projects) in
> series. They are rated at 1.75A but none of the literature specs a
> VOLTAGE at which to run them. On the label, it says "Vs(dc): 65V".
> Normally, I would take this to mean that this motor is designed for
> 65VDC.
>
> Is this the case with a stepper motor of this type?
>
> Most of the controller boards I've seen only have capability for up to
> 35V. Any recommendations?
>
> Thanks in advance for your help.
>
> Bob
>
>
>
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 7
> Date: Sat, 25 Jan 2003 15:35:27 -0700
> From: "Tim Goldstein" <timg@...>
> Subject: RE: Voltage for Full Stack NEMA 23 stepper?
>
> Current Pac Sci motors are rated with a do not exceed voltage assuming
> you are using a current limiting drive. So with this motor you can use
> up to 65 vdc. If you want to figure out the rated voltage that most
> motors would be marked with you need to measure the resistance of a half
> coil and use Ohm's law V = 1.75 * R (this is for your motor
> specifically, plug in the proper amperage on other motors). My guess is
> you will get a voltage in the 2 - 4 v range.
>
> I think you bagged yourself a trophy in this case.
>
> Tim
> [Denver, CO]
> Sherline products at Deep Discount
> Mach1 & DeskCNC with credit card ordering
> www.KTMarketing.com/Sherline
>
> > -----Original Message----->
> > Hi There.
> >
> > So in the hunting and gathering process for my future CNC
> > router / mill I stalked and killed three NEMA 23 stepper
> > motors. They are spec'd out as Pacific Scientific Powermax II
> > motors - 8-lead. I am planning on running them bipolar (for
> > nice, and mean projects) in series. They are rated at 1.75A
> > but none of the literature specs a VOLTAGE at which to run
> > them. On the label, it says "Vs(dc): 65V". Normally, I would
> > take this to mean that this motor is designed for 65VDC.
> >
> > Is this the case with a stepper motor of this type?
> >
> > Most of the controller boards I've seen only have capability
> > for up to 35V. Any recommendations?
> >
> > Thanks in advance for your help.
> >
> > Bob
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 8
> Date: Sat, 25 Jan 2003 23:20:24 -0000
> From: "jeffalanp <xylotex@...>" <xylotex@...>
> Subject: Re: Voltage for Full Stack NEMA 23 stepper?
>
> Hi Bob,
> I have some motors like that (from eBay:deepgroove1). You can run
> them with my drive, see:
>
> http://www.xylotex.com
>
> You can run them in series at full amp rating(1.75A = 100% max). Or
> you can run them slightly derated in parallel rating(2.5A = ~70%
> max). I have run them in parallel and got excellent results (much
> better than series) with a 24V power supply, but a fan is required
> for the drive.
>
> Although the max for my drive is 35V, this is absolute max, while
> typical running max is 90% of that, or about 30V. 24V power supplies
> are readily available, see the following for some switching supplies:
>
> http://www.mpja.com/list.asp?dept=3
> http://www.mpja.com/list.asp?dept=8
>
> For more info on the drive, see the web site (xylotex) above.
>
> Jeff
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "bereshr1 <bereshr1@y...>"
> <bereshr1@y...> wrote:
> > Hi There.
> >
> > So in the hunting and gathering process for my future CNC router /
> > mill I stalked and killed three NEMA 23 stepper motors. They are
> > spec'd out as Pacific Scientific Powermax II motors - 8-lead. I am
> > planning on running them bipolar (for nice, and mean projects) in
> > series. They are rated at 1.75A but none of the literature specs a
> > VOLTAGE at which to run them. On the label, it says "Vs(dc): 65V".
> > Normally, I would take this to mean that this motor is designed for
> > 65VDC.
> >
> > Is this the case with a stepper motor of this type?
> >
> > Most of the controller boards I've seen only have capability for up
> to
> > 35V. Any recommendations?
> >
> > Thanks in advance for your help.
> >
> > Bob
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 9
> Date: Sat, 25 Jan 2003 16:38:45 -0800
> From: Marv Frankel <dcdziner@...>
> Subject: Re: Re: Voltage for Full Stack NEMA 23 stepper?
>
> Jeff,
> A very timely reply, since I also bought the same steppers, and need a
> drive for them. I ordered a Proxxon MF 70 from Tim, and I think the photos
> of his conversion, have one of your drives.
>
> Marv Frankel
> Los Angeles
>
> ----- Original Message -----
> From: <xylotex@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Saturday, January 25, 2003 3:20 PM
> Subject: [CAD_CAM_EDM_DRO] Re: Voltage for Full Stack NEMA 23 stepper?
>
>
> > Hi Bob,
> > I have some motors like that (from eBay:deepgroove1). You can run
> > them with my drive, see:
> >
> > http://www.xylotex.com
> >
> > You can run them in series at full amp rating(1.75A = 100% max). Or
> > you can run them slightly derated in parallel rating(2.5A = ~70%
> > max). I have run them in parallel and got excellent results (much
> > better than series) with a 24V power supply, but a fan is required
> > for the drive.
> >
> > Although the max for my drive is 35V, this is absolute max, while
> > typical running max is 90% of that, or about 30V. 24V power supplies
> > are readily available, see the following for some switching supplies:
> >
> > http://www.mpja.com/list.asp?dept=3
> > http://www.mpja.com/list.asp?dept=8
> >
> > For more info on the drive, see the web site (xylotex) above.
> >
> > Jeff
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "bereshr1 <bereshr1@y...>"
> > <bereshr1@y...> wrote:
> > > Hi There.
> > >
> > > So in the hunting and gathering process for my future CNC router /
> > > mill I stalked and killed three NEMA 23 stepper motors. They are
> > > spec'd out as Pacific Scientific Powermax II motors - 8-lead. I am
> > > planning on running them bipolar (for nice, and mean projects) in
> > > series. They are rated at 1.75A but none of the literature specs a
> > > VOLTAGE at which to run them. On the label, it says "Vs(dc): 65V".
> > > Normally, I would take this to mean that this motor is designed for
> > > 65VDC.
> > >
> > > Is this the case with a stepper motor of this type?
> > >
> > > Most of the controller boards I've seen only have capability for up
> > to
> > > 35V. Any recommendations?
> > >
> > > Thanks in advance for your help.
> > >
> > > Bob
> >
> >
> > Addresses:
> > FAQ: http://www.ktmarketing.com/faq.html
> > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> > Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
> >
> > Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> > Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> > List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
> timg@...
> > Moderator: pentam@... indigo_red@... [Moderators]
> > URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> >
> > OFF Topic POSTS: General Machining
> > If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
> you have trouble.
> > http://www.metalworking.com/news_servers.html
> >
> > http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
> sister site to the CCED group, as many of the same members are there, for
> subjects, that are not allowed on the CCED list.OT
> >
> > NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> > bill
> > List Mom
> > List Owner
> >
> >
> >
> > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
> >
> >
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 10
> Date: Sun, 26 Jan 2003 00:43:50 -0000
> From: "turbulatordude <davemucha@...>" <davemucha@...>
> Subject: Re: Experiance milling PCB
>
> Check out
>
> http://groups.yahoo.com/group/Homebrew_PCBs/?yguid=91454730
>
> for the people who have a fourm for that.
>
> Think and Tinker have the bits you need.
>
> Dave
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Joachim Reif
> <joachim.reif@t...>" <joachim.reif@t...> wrote:
> > Any one know anything about milling PCB. Tried it today and
> realised
> > that the cutter is very important. Anyone know were I can read
> about
> > it some more.
> >
> > Joachim Reif
> > Sweden
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 11
> Date: Sat, 25 Jan 2003 17:58:18 -0700
> From: "Tim Goldstein" <timg@...>
> Subject: RE: Re: Voltage for Full Stack NEMA 23 stepper?
>
> Yes that is a Xylotex drive I am using on my Proxxon.
>
> Tim
> [Denver, CO]
> Sherline products at Deep Discount
> Mach1 & DeskCNC with credit card ordering
> www.KTMarketing.com/Sherline
>
> > -----Original Message-----
> >
> > Jeff,
> > A very timely reply, since I also bought the same
> > steppers, and need a drive for them. I ordered a Proxxon MF
> > 70 from Tim, and I think the photos of his conversion, have
> > one of your drives.
> >
> > Marv Frankel
> > Los Angeles
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 12
> Date: Sat, 25 Jan 2003 20:12:22 -0500
> From: hllrsr@...
> Subject: Unipolar drivers
>
>
> Guys,
> Found this link and thought it might be of interest to someone.
>
> http://www.piclist.com/techref/io/stepper/linistep/index.htm
>
> No affiliation, and usual disclaimers....
>
> Iain
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 13
> Date: Sat, 25 Jan 2003 23:42:56 -0000
> From: "demino3 <demino3@...>" <demino3@...>
> Subject: cnc viewer
>
> I was wondering what software you recommend for viewing cnc (cut)
> files? Is there a shareware piece of software out there? Thanx in
> advance.
> Dennis
>
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 14
> Date: Sat, 25 Jan 2003 20:25:17 -0500
> From: "Lloyd Leung" <lloyd@...>
> Subject: RE: cnc viewer
>
> Try www.cncsimulator.com
>
>
> -----Original Message-----
> From: demino3 <demino3@...> [mailto:demino3@...]
> Sent: January 25, 2003 18:43
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: cnc viewer
>
> I was wondering what software you recommend for viewing cnc (cut)
> files? Is there a shareware piece of software out there? Thanx in
> advance.
> Dennis
>
>
>
> Addresses:
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> OFF Topic POSTS: General Machining
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>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
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>
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> List Mom
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>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 15
> Date: Sun, 26 Jan 2003 01:30:25 -0000
> From: "dakota8833 <dakota8833@...>" <dakota8833@...>
> Subject: Poor Mans Cnc Router
>
> A While ago I mentioned building a cnc router table using cam follower
> rollers.
>
> Well I'm building it! Should take one more week to complete. I have
> made some changes since I uploaded the last cad files. Most of the
> improvements make assembly easier ( less parts ). After it's completed
> I'll upload the new cad files. You can see some picts of it at
> http://photos.groups.yahoo.com/group/CAD_CAM_EMC/lst Cnc Rout...
>
> Let me know what you think
>
> Frank
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 16
> Date: Sat, 25 Jan 2003 19:32:19 -0800
> From: Raymond Heckert <jnr@...>
> Subject: Re: Sherline quick change - the problem
>
> ENCO (Colex) used to make a quick-change tool holder that fit the R-8
> socket in their mills. I bought three complete sets (at $699.95/ea),
> when it looked like they were going to discontinue them (they did
> shortly after). They are really GREAT! I just bought the 2nd & 3rd sets
> for extra E.M. holders & collet set, so, they aren't for sale. But, my
> point is, it would not be at all difficult to come up with a suitable
> Q-T holder that can be located on a MT tang. All it would take is a
> 'Master-retainer', and corresponding holders. I'd be willing to
> brain-storm with anybody interested. Off-line, if this isn't close
> enough to being 'on-topic'.
>
> RayHex
>
> "onecooltoolfool " wrote:
> >
> > Guys, the problem is that the morse taper is not self releasing. All
> > of your ideas are great until you try to take the tool out, it won't
> > come out without a tap.
> >
> > All tool changing machines use self releasing tapers NMTB 30-40-50
> > and some other styles. Until you tackle this basic problem you can't
> > move on.
> >
> > Need a custom spindle with a different taper. There are already
> > standard sizes that would work and are already used on other mini
> > machines.
> >
> > Then it would be easy to design and build an ATC for your Sherline
> > which would be pretty cool.
>
>
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 17
> Date: Sat, 25 Jan 2003 19:46:27 -0800
> From: Raymond Heckert <jnr@...>
> Subject: Re: operating temp of stepper motors
>
> Generally the nameplate temperature rating is actually the
> 'temperature-rise', usually over 40°C ambient. So 50°C over 40°C is
> about 194°F ! Typically, you cannot hold onto anything over 155°F, so if
> you can hold onto the motor, it's probably not too hot.
>
> RayHex
>
> Tim Goldstein wrote:
> >
> > Jan,
> >
> > In this case your advice for stepper temperature is 100% wrong. Every
> > motor I have ever seen with a rating on it (an these are civilian, not
> > military) are rated in the 185 - 195 deg F range. If you are running the
> > motor at only warm to the touch than you have far more motor than the
> >