Re: [CAD_CAM_EDM_DRO] Re: HOBBYCNC

Your right Tim,
Having it built already I agree IS definitely the way to go since its
even probably tested before it goes to the cust.
So less headaches. I'm absolutely sure your more experienced in this than I
am.
I just like the pic one, not necessarily for its resolution but its smooth
control, and the well documented, "Open Sourced"
nature of its operation, making it very easy to fix or Mod in a pinch.
I do want to try the Xylotex though. I must of missed getting the link
since I've been getting this maillist for only a few weeks.
Could you email the link to me??
The Xylotex might be a better option for me when I get my PCB router up.
But I'd like to see specs on it.

Vince

----- 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
> >
>
>
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