Homebrew PCBs

Clamps get in the way of island milling and they will not hold down the PCB material as flat as I would like for fine milled traces as would a vacuum table.  For drilling it may be ok especially if I add a drilling foot to the quill to depress the material to the table.

Craig

--- In Homebrew_PCBs@yahoogroups.com, Jan Kok <jan.kok.5y@...> wrote:
>
> On Sun, Feb 13, 2011 at 12:11 PM, designer_craig <cs6061@...> wrote:
> > I am about to build a vacuum table to hole down the blank stock when I cnc drill my boards.  I am looking some low cost sacrificial material to use between the board and the vacuum table.
> 
> Why use a vacuum table? Why not use hold down clamps, something like
> what is commonly used on milling machine tables?
>