First off thank you to everyone who replied

@coryatjohn - I drop in a stainless steel plate and make the pucks into a bottle opener. I actually ended up adding a row of bolts on the outside edges because those pucks kept moving during cutting. It may be because I'm using a custom bit that starts at 1/2" and tapers down to 1/4" (that's how I get the taper).

@myxpykalin - Thanks for putting that drawing together. I think I might have to get rid of the MDF all together as it flexes quite a bit and if I hold down on the edges I'll end up with flex in the areas that aren't directly next to the aluminum. It might work if I use the aluminum angle with a few of the bolt holes I currently have in there.

@Brian - That's a pretty cool idea. I'd have to check to see if I could use that solution with the Desktop as I only have a bout 2-1/2" of play in the z direction. I can definitely see how that's super time saving on a larger machine.

@Brady - Another cool idea. I never though of using cams like that. And thanks for throwing the illustration together. I could see something like this working really well if I use some smaller cams, it would be awesome to throw all the pucks on, pull a few levers to actuate the cams in place then start machining. What were you cutting so many hockey pucks for?

@geometree - Stop by any time, I'd be happy to show you around. Do you have a recommendation on the size of vacuum pump I would need? Do you think something like this would work (the first pump listed)? I attached some pictures to this post. Would a vacuum jig like this work?

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