re: Vacuum chuck

Buck, you might be aware of this already, but vacuum holding power is greatly increased by the diameter of the chuck. I use the 3 1/2” somewhat regularly since I do mostly small stuff, and it works fine, but I’ve had it come loose on me a couple times when I pushed a bit hard. The 6” on the other hand, is like a steel vise. I wanna say it’s maybe 3x the holding force? Just something to be aware of, if you’re not already.