Re: vacuum hold down

If you mill out the surface so that only very thin lands are left
to support the workpiece, the holding power will be a lot higher.
Pounds per square inch and all that. If you don't believe
me, try it with only one hole uncovered on a piece the size of your
vac table..... Small holes are fine, if there's no leakage, the
"pressure" inside the resulting "chamber" will be uniform, just
spread over a much larger area... /mark

> Date: Thu, 10 Mar 2005 10:00:12 -0000
> From: "Dave Fisher" <dave@...>
> Subject: RE: vacuum hold down
>
> We built a vacuum table with great success
> I have put some details on
>
> www.distel.co.uk/vac_table.htm
>
> Rgds
>
> Dave Fisher
>