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How do You Apply a Saturation Coat of Polyester Resin to Wood?

Published in Resin Application 2 mins read

Applying a saturation coat of polyester resin to wood involves preparing the surface and properly mixing the resin as specified for this type of application. Based on the provided information for applying a wood saturation coat of resin, the process focuses on surface preparation and resin mixture.

Here are the steps involved in applying a saturation coat of polyester resin to wood, according to the reference:

Surface Preparation

The first crucial step is to prepare the wood surface to ensure proper adhesion of the resin.

  • Sand the surface: Use 60 or 80 grit sandpaper. This step is essential to rough up the surface, creating a mechanical key that allows the resin to grip the wood fibers effectively.

Resin Mixing

Once the surface is prepared, the polyester resin needs to be catalyzed and thinned correctly for a saturation coat.

  • Catalyze Polyester or Vinylester: Mix the resin according to the manufacturer's instructions, specifically catalyzing it. Catalyzing involves adding the appropriate hardener to initiate the curing process.
  • Thin the resin: After catalyzing, thin the mixture 25% with acetone. This thinning step reduces the resin's viscosity, allowing it to penetrate the wood surface more deeply, which is characteristic of a saturation coat.

Following these steps prepares the wood and the polyester resin mixture for application as a saturation coat, based on the provided reference.

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