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Perfect Mount Quandary

Discussion in 'The Grumble' started by shayla, May 16, 2019.

  1. shayla

    shayla WOW Framer

    Tiny canvas print, with a mat window of 5 5/8 x 14 1/4". No need to stretch, and if mounting, even at 130 degrees for heat-activated foam, there's no way of telling what the print coating (over the ink) would do. Hesitate to use fabric glue, because what if it soaked through and messed with the ink. So, having used it twice in 27 years, I went for three with Perfect Mount. Followed directions, left it weighted overnight, and the canvas peels right up. Left it for way longer, and still peels up. I finally put it in a cool vacuum press for about twelve minutes, and that helps some. But you can still pull it off.

    I'm wondering if, without pull pressure, it would stay put over the years, or eventually separate. I don't want to send it out if it would bubble, but for all I know, with that tiny size, it would be fine. Feel free to say what your experience with it has been, as well as whether you do mount digital prints on canvas with fabric glue or heat activated foam. I've done a few at 130, but am never sure how the print coating will do.
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  2. David Hewitt

    David Hewitt CGF II, Certified Grumble Framer Level 2

    Perfect Mount is a low tach adhesive, and is normally removable, Kool Tach also can peel off and needs to cure under weight. Larsons Mountcorr for canvas (canvas has double the glue) holds well at 130 temp and does not need to cool down under weight. You need Mountcorr canvas not Mountcorr paper.
    We also mount a lot of canvas on masonite or diebond using Franks fabric adhesive, a paint roller works great for even distribution.
  3. wpfay

    wpfay Angry Badger

    If the piece is to be over matted, why not simply hinge it?
    If the top coating is acrylic gel medium, it can reactivate as an adhesive with heat, so your caution is correct. Could you do a test with some tissue and a tacking iron on the margin that will be covered by the mat? On the other hand, if it is acrylic gel medium, that indicates the piece is not water sensitive and using a fabric glue or acrylic gel medium should be safe for mounting. Take care in choosing a substrate that won't react to the application of a water based adhesive.
    I have had little success with pre-coated pressure sensitive mount boards. Even with the roller press, they tend to lift pretty easily.
    David's suggestion of Canvas Mountcor is probably the easiest and most certain to work if the piece can take the heat.
    Last edited: May 16, 2019
  4. shayla

    shayla WOW Framer

    Thanks for your note. I use Canvas Mountcor, but really hesitate on coated prints, because of the coating. Even if the digital ink does fine, I once had a coating go from smooth and matte to somewhat mottled. In telling this customer, whose print was shipped from Israel, she didn't want to take the risk. I was really wishing she'd say to go ahead. As for doing a test strip, I mentioned it, but the only extra piece is a scrap of bright white about 3/4" wide, and it would be a trick to see if the coating was affected. We did hinge a small canvas print several years ago, but I've always wondered if, because it's fabric, it later rippled. Have you hinged them?

    I'm thinking of just sending it like this and telling her to bring it back if it ever bubbles. It's pretty tiny, and who knows, maybe it only releases when lifted.
  5. MnSue

    MnSue SGF, Supreme Grumble Framer

    perfect mount with vacuum press no heat...
    alacrity8 likes this.
  6. Rick Granick

    Rick Granick SPFG, Supreme Picture Framing God

    Those canvas prints often have a coating on the back that doesn't stick well to self-adhesive board (even Elmer's, which is high tack and pretty aggressive). I would use Frank's Fabric Adhesive, and attach while it is still tacky, so it doesn't have to be reheated to activate. Let dry under weight.
    :cool: Rick
    alacrity8, Joe B and shayla like this.
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