Fluorescent yellow staining alert!
As already mentioned CA glue and spruce are a bad combination. The glue can wick into the wood and a chemical reaction with the spruce leaves a nasty bright yellow stain. The same thing doesn’t happen with maple.
I saw an interview recently with Bob Taylor who said when he first started using CA glue this wasn’t and issue, but changes in formula cause this reaction.
Hide glue, fish glue or TiteBond are better alternatives.
I do use CA glue to repair marks in shellac over a spruce top, but you have to be sure there’s shellac between the glue and spruce.
|