Phillip Hallam-Baker wrote:
You mention 'vacuum bag', can those storage bags be used for this?


Good question, I haven't tried doing it either way or arything like it.

The bag is probably flexible enough and strong enough to get good
clamping pressure with cauls.

I am not so sure about using a domestic vac to create and maintain the
pressure. You can't solve the problem of air leaking back into the bag
by having a domestic vaccum pumping continuously, well you could but I
don't think the motor would last very long.

I did a google but couldn't see any comments.


I just found plans for a vacuum veneering setup. Looks like something
I'll try in my shop (once I get it all built, that is).
http://www.joewoodworker.com/veneering/whybuild.htm

According to his site, 30mil is the best vinyl, and you don't want to
run the vacuum pump continuously, but to cycle it using a vacuum
pressure controller since most vacuum pumps have a zero pressure restart
ability (they're unable to restart while under vacuum). The author
claims that 21-23" of mercury is about what is needed for veneering, and
the pump should cycle back on between 17 and 19" of mercury.

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