I am looking at a couple of used Shopbots to bring into our shop and cut out cabinet parts. I really want to use a vac hold down, as there may be many parts coming out of one sheet. I see that many guys have found other means (other than the 15HP 3 phase) to hold down their work. For the guys out there that have tried, would it work to use a vacuum pump (or pumps) like what is used to pump down a residential a/c unit. They pump at about 28hg at about 4.5 to 5 cfm. If a guy took two of these, and routed them through a holding tank of some kind, do you think that it would work? I know that this issue has been beat to death (I have looked at all the old threads), but I do not see where anybody has tried this. They run off 110, which would be a big benefit.
Thanks in advance