ger21 wrote:With a 10HP Becker, I'd use vacuum for everything, if possible. We use vacuum exclusively on our Morbidelli. It has two 10HP Beckers on a 5x12 table. For small parts that may move, I block them in with scrap melamine.
You could always drill and tap the aluminum in between the gasket slots.
I'm in Cali... do you know how high our electricity rates are? We are punished here just for breathing now days... I think going the route of drilling and tapping some holes on the square flats is a good idea. I can then make a spoilboard with t-tracks, etc. on 1" mdf to clamp small stuff to. The reason is when doing 3D carvings and such they can take 12+ hours working in a small area so the vacuum would be a waste. I like those rockler hold down clamps that are made for t track... quick, easy, cheap and effective.