Those will work on a small bag for a few short sessions but they are
hard on a small air compressor when you need to hold a vacuum for
several hours. You would need to add a resin trap, tank, check valve,
solenoid and vacuum switch to save the compressor.

jcassara wrote:
Check out Harbor Freight. They sell a vacuum pump driven off
an air compressor for about $10. It is probably listed on
the web site as an automotive A/C part. I was in one of
their stores, it is packaged as an A/C evacuation pump.


John

"William R. Watt" wrote in
message ...

William R. Watt ) writes:


claims he got 25 psi vacuum for his

right. change "psi" to "lb".
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