RE: [CAD_CAM_EDM_DRO] Vacuum pump for vacuum chuck?

Main thing with vaccuum pumps is CFM evacuated.  

--- On Wed, 7/2/08, Chuck Merja <chuckm@...> wrote:

From: Chuck Merja <chuckm@...>
Subject: RE: [CAD_CAM_EDM_DRO] Vacuum pump for vacuum chuck?
To: CAD_CAM_EDM_DRO@yahoogroups.com
Date: Wednesday, July 2, 2008, 7:01 PM






I wonder about this dual pump thought too. Can you use old refrig pump for
the "cheap" vacuum pump? Lots of epoxy gluers do so. Chuck
>Tim,

Maybe both a shop vac and a vaccuum pump. Using check valves it is possible
to set up so that the shop vac starts the process and then the pump takes
over to put a bit of presure on the part. Remember that you only get about
14psi clamping pressure with a good vacuum pump.

I use a Robinair pump for some non machining tasks (RTV evacuation) and am
pleased with it. Lot of bang for the buck.

Jack

>>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
1530 W Tufts Ave Unit B
Englewood CO 80110
720 833-9300

www.A2ZCNC.com/ store
Upgrades and accessories for table top machinists

[Non-text portions of this message have been removed]


[Non-text portions of this message have been removed]


















[Non-text portions of this message have been removed]