How to glue metal to wood quickly and strongly

Jun 23, 2021

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The question of how to glue metal to wood, often arises when you need to glue to the furniture, for example, elements of the decor of metal. Here you need something that will allow you to "permanently" connect the surfaces.

The strongest type of glue for metal to wood are polyurethane-based or epoxy adhesives. These types of adhesives are also used to glue metal to other surfaces.

The most important thing is the preparation and the process of gluing. It is important to understand that the metal surface oxidizes when exposed to moisture and the oxidation film flakes off the material along with the glue, so the entire process must be performed in a dry room.

First treat both surfaces:

Wood treat with solvent and dry the surface.
Metal to treat first with sandpaper, removing the oxides, then rinse with solvent and dry, then thoroughly wiped with a solution of nitric or sulfuric acid and also dried.

Then a layer of glue is applied to the metal and wooden surfaces and without pressing the materials to each other, you hold them for a specified period of time, depending on the instructions. Generally it is about 10 hours, but no more.

Now, both surfaces again apply glue and connect to each other, putting the joined parts under the press or clamping - it is mandatory, otherwise you will get a poor quality bonding.

Also, in addition to polyurethane adhesive bases offer to glue the two materials with silicone rods, which belong to the group of hot melt, but we can assume that the silicone is first applied to the metal, and then pressed to the surface of the wood. But small surfaces are good for thermal adhesive, where you can keep the temperature of the adhesive in the same mode until the glue is bonded.

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Tags: English