Building Vacuum Clamp and Mechanical Clamp Sub-Table
So I was using my machine this weekend and came across some all to familiar problems for holding down my material. I have a 50" x 100" Aluminum Table with Drilled and tapped holes on 4" centers. What I want to do is bolt down a piece of 1" Ply with holes drilled and T-Nuts pressed in I would like it on more holes then 4" centers gives but that I can work around. What I am having trouble deciding is the vacuum side of it. I want to split the table in to 8 zones at 2' square each. Now I'm undecided if I should cut out paths for air lines or should I just be carving out a path on the underside and let that become a chamber sucking the ply down to my top. As well I'm looking at the options of running an electric vacuum pump or a compressed air pump.
I'm looking at all options but I would like to start making the top with in the week.