Q: Is there enough suction from a 5 HP shop vacuum to remove the air from a large vacuum press bag? Also, will a fine mesh wrapped around the project inside the bag reduce veneer bubbles?
Carol Reed: There is, but you will need to design your system to "bleed" air, or you will burn up your shop vacuum right quick. In any event, your shop vac will be mightily abused with this practice. There are many sources for good used vacuum pumps designed for this kind of work. With regard to the fine mesh question, some people use fiberglass screen material as the mesh material. Enough suction, however, and you will have imprinted the mesh pattern onto the veneer. Use a piece of melamine scored on your tables aw to 1/8" deep by 4" squares. That way, you have three advantages. One, the melamine won't glue itself to your veneer. Two, the air can escape, leaving no bubbles. Three, you get a flat piece of veneer.
This article originally appeared in the Woodworker's Journal eZine.
Click here for information on this free, twice monthly online publication.
Copyright; 2010 Woodworker's Journal
All rights reserved. No part of this article may be reproduced in any form or by any electronic or mechanical means, including information storage and retrieval devices or systems, without prior written permission from the publisher.
|