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Reply by Rich

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Posted on Sanding between coats of Minwax Polycrylic

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Rich

5015 posts in 1156 days


#1 posted 07-04-2018 04:05 PM

I think it’s usually best to follow the manufacturers directions. They say to sand with 220 between coats, letting each dry at least 2 hours. They also say 3 coats are recommended.

However, the 220 grit suggestion sounds fishy to me. It seems too coarse. Also, Minwax has one of the poorer reputations for good advice. That’s just an impression I get from reading, I have nothing concrete to back it up.

If it were me, I’d use 400 grit without a sanding block and just go over the surface lightly to knock off any nibs. I’ve gotten excellent results with waterborne poly as far as the quality of the surface goes doing that. What I don’t like about them is that the non-gloss sheens seem to leave a bit of a haze after a couple of coats. Behlen has been the worst leaving an unacceptable blueish haze in the finish. General Finishes High Performance is better, but for my money, I prefer to stick to oil based products like Arm-R-Seal when I need a durable finish for a surface. All other times, I use lacquer for its ease of application and flawless finish.

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


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