Will this work for a vacuum Chuck??

I can't say about a vac chuck, since I'm not a turner, but if it'll evac an AC system that means it'll pull about 25+ inches of Mercury for a vaccuum. It'd be very useful for vaccuum bagging/veneering/bentwood glue-ups, etc.

I'm guessing it'd work for a chuck - but that IS just a guess.
 
If it works for a bag, it will work for a chuck. The only difference is the type of vacuum chamber you have created. There is no different demand on the pump.

I have built numerous vacuum systems, as I once taught a vacuum clamping class (for 4 years). My students each built their own system and then applied it to many and varied applications, including turning.
 
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