Turning Archive 2004
>I completed my first vacuum chuck and for the seal I used closed cell foam that came with self adhesive back. I held a bowl against it and turned on the pump. Gauge showed 20 Hg and it pulled the foam away from the MDF face. I have some foam with no adhesive on it and wonder what I might use to secure it to the MDF?
Had no problem with holding the bowl (6" diam.). Is 20Hg too much vac.?