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Spray lacquer finishing

by Steve22629CALVI
posted 08-08-2017 06:04 PM

2 replies so far

View TungOil's profile


1383 posts in 1351 days

#1 posted 08-08-2017 06:29 PM

you must have resoftened the finish with the mineral spirits. lacquer coats melt into each other (the top coat softens the previous coat and they become one film). I think your best bet will be to sand out the mess and respray. Hopefully Charles will chime in, he is the expert.

-- The optimist says "the glass is half full". The pessimist says "the glass is half empty". The engineer says "the glass is twice as big as it needs to be"

View Rich's profile


5906 posts in 1446 days

#2 posted 08-09-2017 01:30 AM

I’ve never had mineral spirits or naphtha soften a lacquer finish. What did you use with the pumice? I use paraffin oil, and find it works best.

Now, here’s my take on what you’re doing. You don’t use pumice between coats of lacquer. In fact, you shouldn’t need to do any sanding at all, and if you do, maybe 600 grit. Like Tung said, lacquer blends into earlier coats, so you don’t need any roughing like with some other topcoats.

If you’re really going for that piano finish, you’ll need to fill the African mahogany grain first. I use it a lot and it’s very porous. It’ll take forever to fill that with lacquer. Also, do all of your coats of lacquer before you try any rub out with pumice — it’s a final step. And finally, pumice 4F is still pretty gritty, so get some rottenstone to use after the pumice. At the end of it all, you can use mineral spirits or naphtha to clean up, but don’t do it between coats of lacquer.

And, above all, practice on test boards. Figure all of this out before you even think about touching your actual table top. It will save you a world of misery. Just take some pieces of the wood, sand them exactly as you will your table top and try different recipes. Take notes too.

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner

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