Re: [CAD_CAM_EDM_DRO] Updated DRO using screw threads not pulleys

In a message dated 8/17/00 11:42:36 PM Central Daylight Time,
dgehlsen@... writes:

<< An old plotter that I had used a drum and coated wire to move the pens. the
wire was fixed at the center of the drum and when the pen was at one limit,
one half of the drum was full and the other half was almost empty. That way
the wire always traveled in the same place on the drum.
Darrell >>

Darrell: Was that a Varian brand? I had an old Varian with that mechanism,
and it worked fine, but I don't think I'd advocate it for "CNC"! For
plotting on PAPER, it was fine. For DRO? I don't think the "repeatability"
would be worth a dang.