How to Glue Plastic to Aluminum

Written by sarah coennen
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How to Glue Plastic to Aluminum
Repairing a plastic-and-aluminum iitem takes the proper glue. (plastic flower 4 image by dompach from Fotolia.com)

Plastic and aluminum are used to make a multitude of common items, and a craft project or repair job might require you to glue the two materials together. There are several types of plastics and aluminums, ranging from soft and pliable to hard surfaces, so you will need to choose the right kind of adhesive. This can take a bit of trial and error, which is best done with extra scraps of the same types of plastic and aluminum. That way you won't damage the materials you are using.

Skill level:
Moderately Easy

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Things you need

  • 3 types of epoxy glues
  • Scraps of plastic
  • Scraps of aluminum
  • 3 clamps

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Instructions

  1. 1

    Cut each piece of scrap plastic and aluminum into 3 1/2-inch by 1-inch squares.

  2. 2

    Glue one piece of plastic scrap to one piece of aluminum scrap. Push the ends of the epoxy tubes until a small dab of each tube is placed on the scrap pieces and then press them together.

  3. 3

    Clamp the pieces together using a simple clamp. Allow the scrap pieces to sit clamped overnight. Repeat with each scrap piece and allow to sit overnight. Make sure you know which epoxy glued each sample.

  4. 4

    Test each of the samples in the morning to see which epoxy holds up the best. Try to peel them apart. If they all come apart easily, then pick some new epoxy glues. If they all hold together firmly, then choose the epoxy with the lowest price for your project.

  5. 5

    Use the epoxy that you've chosen to spread on your project pieces of plastic and aluminum. If it is a rather large piece, you can use an old paintbrush to spread both parts of the epoxy on one layer. When finished, immediately soak the paintbrush in a mixture of mild detergent, warm water and a small amount of acetone.

  6. 6

    Press the two pieces together and clamp them overnight.

Tips and warnings

  • Epoxy glue is extremely flammable. Do not use flame or fire around epoxy glue.

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