How to Glue Wood to Wood

2 responses

  1. Keith
    March 14, 2012

    With few exceptions (epoxy, which is stronger), when properly done, most glues have a standard strength (shear) strength within 10% of each other. All these are generally stronger than the wood adherands. That means if it breaks again, it's likely to break in the wood not in the joint. So proper preparation such as clean and well-fitting joints is more important than which glue you choose. So choose the glue based on other criteria such as need to be waterproof, gap-filling properties, temperature range, open and closed clamp time, cost, etc.

    PVA glues have a "chalk temperature" of between 47F and 55F. depending upon the formulation. When the glue "chalks" it turns white as it dries and looses significant strength. So if you are doing glue ups in a cold garage, bring the wood and glue inside to warm up prior to gluing. Your spouse will not mind your using the kitchen table as a clamping table if you cover it with plastic first.

    When polyurethane glues cure, they foam up. While the foam fills a gap, it has no strength. A recent magazine test showed that the only failures of all their rests were polyurethane glue.

  2. Paul
    June 24, 2016

    When gluing wood to wood do you apply glue to both of the wood surfaces?

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