Re: Newbie

I also plan to use rack and pinion for my setup if the cost comes out
being worth it. I have been told to use the new 20 degree pressure
angle rack instead of the older 14.5 degree. But I also have the concern
of accuracy, I know it will be really good for Plasma and Oxy/Fuel, and
on a 4'x4' router I am sure you would probably not even notice the error
in a really big job like a house door or something, but PCB milling might
be a differant story. Here is a neat web site showing how the gears
work on a rack drive system, you need JAVA installed I think.
http://www.brockeng.com/mechanism/RackNPinion.htm

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "mlkpmiller"
<lisa.miller@w...> wrote:

> I once saw someone mention a rack and pinion drive for a long axis.
> What kind of tolerances can this arrangement maintain?
>
> Mike