In a previous post I noted that we applied polyurethane to the Rosewood electrical boxes. Well, the urethane never hardened. Why? Because Rosewood contains oils that prevent the full polymerization of polyurethane.
Now I know that. Then, well, I should have.
Back in the mid-1970's I built an electronics enclosure from Rosewood that required very special preparation for a catalyzed lacquer finish. How quickly I forgot that experience.
After the boxes failed to harden with polyurethane I did some research on the internet and quickly recalled my adventure from almost 40 years ago. Subsequently, I scrubbed the boxes with acetone and steel wool to remove the polyurethane. I then sanded with 400-grit paper, sealed with Deft lacquer sanding sealer, sanded again with 400-grit paper, then applied three coats of Deft Semi-Gloss Spray Lacquer.
The results are as expected, and quite spectacular.
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