Re: [CAD_CAM_EDM_DRO] CNC'd drafting machine?

Mike,
If you put stiff enough tension springs somewhere in that cable, you
don't have to worry much about stretch. You might want to go into a marine
supply house, and ask for recommendations of cable.

Marv Frankel
Los Angeles

----- Original Message -----
From: "Mike Snodgrass" <snarf@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, October 25, 2002 5:10 PM
Subject: Re: [CAD_CAM_EDM_DRO] CNC'd drafting machine?


> How bout that! I have two of the units you are talking about, one vemco
and
> one k&e, both are 6ft long. I had
> pondered the same thing, they would be very easy to make atachments for.
> The problem was how to drive them. I finally decided to try 1/16"
aircraft
> cable and steppers. I don't know how much stretch to anticipate out of
12'
> of cable, we'll see how it works.
>
>
>
>
>
>
>
>
> ----- Original Message -----
> From: "Carlos Guillermo" <carlos@...>
> To: "CAD_CAM_EDM_DRO@egroups. Com" <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Friday, October 25, 2002 11:17 AM
> Subject: [CAD_CAM_EDM_DRO] CNC'd drafting machine?
>
>
> > Hi All -
> >
> > Anybody ever CNC a drafting machine? I was clearing out some
> > space in the shop and came across an old Vemco drafting machine.
> > Looking at the design, it brought to mind the one-sided-drive
> > cantilever-beam configuration that was discussed recently. The
> > mechanism looks like it would make a nice large capacity 2-axis
> > machine for low force applications like hotwire foam-cutting,
> > vinyl sign making, cloth marking, plasma cutting, etc. The
> > rollers are adjustable and protected, and the rails should have
> > pretty good straightness. It might even be possible to hide a
> > drive belt on the underside of the rail extrusions. You could
> > even take the unit and clamp it onto the workpiece, or mount it on
> > the wall. If I only had the time....
> >
> > Regards,
> >
> > Carlos Guillermo
> > VERVE Engineering & Design
> >
> >
> >
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>
> 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/
>
>