Re: [CAD_CAM_E DM_DRO] Vacuum pump for vacuum chuck?

You don't need a very high vacuum --here is a simple system for a small wood lathe chuck:
http://www.rockler.com/product.cfm?page=17202&cookietest=1
For small vacuum bagging laminating projects a shop vac type works fine. You do need a unit that has separate cooing air over the motor. The simple ones rely on air thoughput through the system to cool the motor which is fine for vacuum cleaners but not for clamping. You will burn the motors out. I think you can find information ( I can but not today) in " Fine Woodworking '"
magazine archives on vacuum clamping. Google "Vacuum clamping" It will not be expensive in normal sizes.. Pumping an aircraft composite structure in an autoclave is another thing.

jesse

---- timgoldstein <timg@...> wrote:

> Thinking that for a variety of my projects I need a vacuum chuck. Any
> suggestions on what type of pump I should be looking at? Do I want a
> real vacuum pump that can pull a relatively high vacuum, but the CFM is
> low or is there another style of pump that would work better. Most of
> the items I am expecting to clamp will be slightly to moderately air
> permiable.
>
> Thanks,
> Tim
> A2Z Corp
> A2Z CNC division
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> 720 833-9300
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> www.A2ZCNC.com/store
> Upgrades and accessories for table top machinists
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>