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Looking for the right top coat
Just joined the group and I have a question about finishing.
I am looking for a good 2k polyurethane top coat that cures really as hard as possible. I had good luck with Nason brand finish a few years ago but since covid I have had a really hard time getting it. I am currently using shop line brand clear from my local paint store but it really doesn’t cure as hard as it needs to for a good durable finish. There have also been some adhesion issues especially on the edge of the fretboard causing flaking when doing my fret ends. I have used nitro in the past and don’t really see a place for it on newly built guitars.
Any suggestions are much appreciated.
My finish workflow:
-simtec 28×50 sanding sealer
-sanded level with 320
-paint if solid color
-top coat
-wet sand to 2000
-cut, buff, polish
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2 Replies
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Hi Samuel: I don’t use poly but I would search for finishing info by Jeff Jewitt on the loothgroup or check out his finishing courses on Robbir Obrien’s website. Jeff uses a poly finish that I think is from Italy. I don’t know if it is harder or has better adhesion than the Simtec but it is worth looking into. You might also looking into Cardinal poly finishes. For a time I used thier UV cured poly and it was very hard.
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I use Ilva Hi-Solids 2K topcoat. Product # TP-60 with their isocyanate hardener and thinner. Its around 50% solids. I use it over their polyester sealer which I’m sure is similar to Simtech. I like the Ilva sealer the best. Use my name if you want.
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