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Thread: Vacuum veneering question

  1. #1
    Join Date
    Mar 2006
    Location
    Fort Wayne, IN
    Posts
    361

    Vacuum veneering question

    I've done some hammer veneering but this is the fist time I'm using a vacuum bag. The question I have is how do you keep veneer from shifting on the substrate?

    I'm building a walnut sofa table and originally I hadn't intended to veneer the front aprons and drawer. But then I came across a piece of walnut that screamed out to be used to veneer the front. I understand that normally you cut the substrate larger than the veneer and trim later but the problem is that the parts are already cut and the joinery completed so the veneer will need to be cut to the size of the parts. I'd prefer not starting over if possible, although it I guess it could be done. Is there a way to insure the veneer doesn't shift after it goes into the bag? The veneer is shop sawn walnut, probably 3/32" going onto solid walnut substrate.

    Thanks for all advice.

    Cliff
    Last edited by Cliff Polubinsky; 03-28-2019 at 4:31 PM.
    Mudhead: "Doesn't Louise count?" Porgy: "Only to 10, Mudhead."

  2. #2
    Ordinarily I cut the veneer larger than the substrate, then trim afterward.
    If you absolutely can't do that, shooting a couple 23 gauge pins thru the veneer should hold it. If you have a 23g pinner

  3. #3
    Join Date
    Aug 2013
    Location
    Providence, RI
    Posts
    337
    I have used packing tape to keep commercial veneer in position during vacuum pressing. There won't be much (if any) lateral pressure on your materials so the tendency to shift should be minimal. One problem with this approach is that squeeze out can spread under the tape rather than beading up nicely, so you might want to prefinished the edges of your substrate.
    -- Jim

    Mr. Natural sez, "Use the right tool for the job."

  4. #4
    Join Date
    Apr 2017
    Location
    Bucks County, PA
    Posts
    198
    I use blue painters tape.

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