That's exactly the kind of knowledgable information I was looking for.
I stand convinced - save up for the microsteppers. thanks Al --- In [EMAIL PROTECTED], "Statman Designs, LLC" <[EMAIL PROTECTED]> wrote: > Al, > > This is a vast over simplification of the problem. If it were just that > easy to set the feedrates above the resonance bands then there would be no > need for microstepping drives. For simple single axis moves, you can easily > set the stepper motor start speed above the resonance band and never have a > problem. For concerted moves of multiple axes you will encounter the > resonance band whenever one axis has to move slowly to keep in sync with > another axis. The feedrate sets the vector sum of all axes, but does not do > anything to control the feedrate of a single axis, and you will lose steps > with a full or half stepping drive. > > Daniel J. Statman, Statman Designs > www.statmandesigns.com > [EMAIL PROTECTED] > > > ----- Original Message ----- > From: "arielnh56" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Thursday, December 02, 2004 6:47 PM > Subject: [CAD_CAM_EDM_DRO] Re: Low cost 6A stepper drivers on eBay > > > > > > > > > > I had assumed that the microsteps/half steps were for increased > > resolution. I stand corrected. > > > > The gecko microsteppers are about 5 times the price of these basic > > drivers. While I accept that "you get what you pay for" surely these > > are not complete junk? I thought the resonance issues only happened > > at certain speeds (or load/speed combinations?). If this is the > > case, would it be a practical approach to go with these and work > > around the resonance issues by adjusting feed/speed until I can > > afford the upgrade to the microsteppers? > > > > Al > > Addresses: FAQ: http://www.ktmarketing.com/faq.html FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/ Post Messages: [EMAIL PROTECTED] Subscribe: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] List owner: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED] Moderator: [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] [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 THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........ bill List Mom List Owner Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
