Re: [CAD_CAM_EDM_DRO] Re: HOBBYCNC

----- Original Message -----
From: "Tim Goldstein" <timg@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, December 31, 2002 7:43 PM
Subject: RE: [CAD_CAM_EDM_DRO] Re: HOBBYCNC


> Vince,
>
> If you criteria for performance is how fine they can microstep than yes
> the PIC design is superior. I am using some drives that will do 50,000+
> microsteps per revolution, but find that in my application (in this case
> a Sherline mill) they give the best results when considering all the
> other factors at 1000 microsteps per revolution.
>
> My point is that on most of the applications I have seen 1/4 - 1/8
> microsteping (800 - 1600 steps per rev) is usually giving a smaller step
> increment than the machine can resolve anyway and is smooth as can be.
> At that point all that going to a smaller step increment does is place
> heavier demands on the controller software. So if my choice was between
> a microstep rate that yielded a step increment much lower than the
> machine can deliver or having a bipolar 2.5 amps prebuilt microstepper I
> would not have a hard choice.
>
> As has been pointed out we live in wonderful times where us CNC
> hobbyists have so many choices so we can all get the features we feel
> are important.
>
> Tim
> [Denver CO]
> Sherline Products at Deep Discount
> Mach1 & DeskCNC with Credit Card ordering
> Contact me for discounts on DeskCNC & Sherline bundles
> www.KTMarketing.com/Sherline
>
> > -----Original Message-----
> >
> >
> > Can any of those do Microstep 3000+/rev. ???
> > Who cares about the current draw... Switch the driver
> > transistors and you could push 10amps. (of course recal would
> > be necessary)
> >
> > > microstepping to 1/8 for the Xylotex.
> >
> > I might be mistaken but this still doesnt seem to beat the
> > performance of the Pic based one. Am I wrong?
> >
> > Let me know.
> > Vince
> >
>
>
> 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@...
> Moderator: jmelson@... timg@... [Moderator]
> 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 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/
>
>
>