Is it ever OK to put screws in your bleeder board?
I am helping a friend of mine setup a vacuum system on a Shopbot that he is in charge of at a local college. We are going to make the plenum out of standard MDF with 6 zones. Then glue down a 3/4" thick piece of Trupan for the bleeder board.
I've had my own Shopbot many years without a vacuum table, so I am new to vacuum systems and I am accustomed to screwing everything down. Is it heresy to use screws to hold down small irregular pieces that don't go all the way through the bleeder board?
I know you can use a sacrificial piece of plywood and screw to that and hold with the vacuum. But, I just wondered if your could screw into your bleeder board without ill effects in order to save turning on the vacuum for small jobs.
PRT Alpha with 7.2 upgrade, indexer, and PC router