Pneumatic or vacuum pump? Veneersupplies.com seems to be one of the main suppliers for turnkey vacuum systems. Their low/mid range venturi and pump systems are roughly comparable in price. I have a big 5HP 80 gallon compressor so I have plenty of air. How much should I expect the compressor to cycle on and off while maintaining the vacuum, assuming good bags and seals? A little vacuum pump would use a lot less power than the air compressor, even if it did run more.