Re: Machine geometry

On Sat, 12 Jun 1999 21:37:10 -0500, "Robert Campbell"
<rcamp@...-dfw.com> wrote:

>I have a 4' by 4'
>moving gantry system which has some play in it. I am currently building a
>2' by 2' fixed bridge cnc router that should be very ridged. I cut a lot of
>Corian and wood parts.

I missed the description of your 4X4, if you posted it. Could you say
how it was constructed, as to guides used, gantry framing/structure, and
also positioning method/hardware? I'd most like to hear any insights
you've gained from this "some play" which you've experienced. Most
helpful would also be the Z-travel range you've worked with on your 4X4,
or do I get your drift correctly, that it's even in just the X-Y plane
that you have this play?

TIA,
Gar