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Warped afterUnibond

Discussion in 'Wood / Woodwork / Carpentry' started by unionworkeruk, 14 Dec 2016.

  1. unionworkeruk

    unionworkeruk

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    I have a 2 metre length of beechwood 1 cm thick 5cm across. I waxed it ok and then tried to use Unibond No More Nails to fix it to some emulsioned beech plywood.

    It twisted and warped within minutes and after 30 minutes I could simply pull them apart with the board now also bowed from top to bottom and useless.

    .
    I know some instant adhensives warn not to attempt to glue to emulsion but this was not on this product and why would that warp the wood ?

    Is it the wood, the unibond or me ?

    I still need to find some more wood to fix to the emulsioned ply wall so what am I doing wrong ?


    Thanks
     
  2. foxhole

    foxhole

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    Waxed wood won't take glue, why no screw?
     
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  4. unionworkeruk

    unionworkeruk

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    Thanks I have screwed all the ply panels to the wall and this thin panel was to divide a painted section from a waxed section. I thought gluing it would show the grain and divide far better. Instead......

    I will look for some more wood and screw it to the existing ply.

    Thanks for stopping me making the same mistake again.
     
  5. Chud

    Chud

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    Is that no more nails solvent free? Waxing will cause adhesion problems - cabinet makers use wax paper or waxed worktops on their assembly tables to stop glue sticking to them - you can remedy this by wiping the surface to be glued down with Isopropyl alcohol or some odourless white spirit but the twisting/warping sounds like it's caused by water content in the adhesive.
     
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  7. unionworkeruk

    unionworkeruk

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    Thanks for all the advice. I does seem to be a reaction be a between the glue and the wax. I scrapped off all the glue, laid the board on the floor under some hardboard and got everyone to walk all over it for the evening while it dried out

    By morning I had a flat board again which I could tack to the plywood, countersink and fill. Much better all round as I have a clean board easy to remove with no visible signs of support.

    Thanks again.
     
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