If anybody here has used the Tormach vacuum chuck I'd like to get some feedback on it. It has an 8x8" footprint and is designed to be held in a 5" or 6" vise between the jaws in the outside positions. At $279, it is a lot cheaper than the full size vacuum plate that Tormach sells or the ones that Pierson sells.

I'm think to use it to flycut some nominal 1/4" CPVC bar stock down to a specific thickness. The material bends and shifts too much to get consistent results when held by the 5" vise jaws, so the vacuum chuck seems like a good solution.