Re: [CAD_CAM_EDM_DRO] Sherline vs Unimat

Peter

I have converted an old Unimat SL using surplus steppers and the controller
built from plans by Daniel Hudgin's DANCAM. The major problems came from
the backlash on the X axis caused by age and the way adjusting carriage
tension ALSO adjusts the lead nut. I ended up adding an adjustable bronze
nut. To the Z axis I added a worm drive and removed the big
spring...gravity takes up the horrendous slop. If you are interested I can
post some pictures, but my present machine represents LOTS on learning and
what happened to be in my scrap box, not an optimal design. And it still
won't make 2mm cuts in stainless ;)

Jeff


At 06:09 PM 01/28/2001 +0000, you wrote:

>There was a discussion on the merits of Sherline vs
>Unimat on the Sherline list recently. I posted the
>message below in that list but thought I have a better
>chance of getting it answered on this list
>
>Subject: Sherline vs Unimat
>
>I have a Unimat Classic. I hope to retrofit it for CNC
>for learning purpose. Has anyone
>Retrofitted the tiny Unimat, or have anyone any
>information for a commercial retrofit kit? Commercial
>operators welcomed.
>Thanks
>NP
>
>
>
>
>____________________________________________________________
>Do You Yahoo!?
>Get your free @... address at http://mail.yahoo.co.uk
>or your free @... address at http://mail.yahoo.ie
>
>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the

discussion of shop built systems, for CAD, CAM, EDM, and DRO.

>
>Addresses:
>Post message: CAD_CAM_EDM_DRO@egroups.com
>Subscribe: CAD_CAM_EDM_DRO-subscribe@egroups.com
>Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@egroups.com
>List owner: CAD_CAM_EDM_DRO-owner@egroups.com, wanliker@...
>Moderator: jmelson@... timg@... [Moderator]
>URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>bill,
>List Manager
>
>FAQ: http://www.ktmarketing.com/faq.html
>
>
>