On 2009-09-18, Morris Dovey wrote:

http://www.beckerpumps.com/

They're more expensive but those who have 'em, love 'em.

You are paying insane amounts of money for vacuum overkill. A simple
vacuum cleaner will provide all the vacuum mecessary for holding down
verneer pieces, even lager ones. The mechanism at work here is not
vacuum. but the air pressure acting on the pieces to be held. IOW,
it's not the level or rate of vacuum, but the atmospheric pressure on
the other side of the work. You can buy a $10 million dollar vacuum
system, but the air pressure holding down the pieces will never exceed
14.7 psi.

nb