Semi-transparent stain consists of two principal ingredients: solvent and solids. The solvent is the vehicle that carries the solids to the wood. The solvent evaporates, leaving the solids to sink into the wood grain to color it. If your stain seems watery or thin, or your wood is staining too light, you can increase the concentration of solids by thickening the stain. Semi-transparent stain doesn't have many solids to begin with. You don't need to add anything to make it thicker, just remove some solvent.
Things You'll Need
- Clean gallon can
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Remove the lid from the can of stain. Let the stain can sit by itself in a well-ventilated area for 72 hours so the solids can settle and form a layer on the bottom of the can.
Pour one-third of the solvent off the top of the can into a clean can.
Stir the remaining solvent with a stick. Apply some of the stain to a scrap piece of scrap wood with a cloth. Let it dry for 15 minutes.
Repeat steps one and two if stain is not thick enough, or dark enough.