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Reply by becikeja

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Posted on Sanding between coats of Minwax Polycrylic

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becikeja

1032 posts in 3380 days


#1 posted 07-04-2018 01:18 PM

I struggled for a long time with applying the top coat. I started out by sanding as the directions said and had the same results you’re seeing. Then I decided not to sand between coats at all, and found that I could never get a smooth finish.
Then one day I was at a woodworking show and discussing my dilemma with one of the speakers. I remember him looking at me like I was crazy and had no business in woodworking. He then arrogantly told me that the idea of sanding between coats was simply to knock the grain back down and break the seal for the next coat. The first coat filled the pores, the second coat would fill gaps caused by the first sanding and the 3rd coat and/or 4th coat actually provided the finish. Hmmm I left puzzled and then the light turned on for me. I was looking for a finish from the first coat and should have just been trying to establish a base. Now I sand my projects to 220. Then apply a light first coat rubbing it on and into the wood with a cloth, not a brush. After the first coat a very light hand sanding with 400. I simply try to get a little dust stirred up and cloudy look to the finish and sand till its smooth to the touch which doesn’t take much. I then blow the dust off with an air gun, and repeat till the shine I want is there. Most of the time 3 coats does the trick but sometimes I need 4 depending on the wood. I always use General Finishes Arm-R-Seal if I’m using polyurethane. I’ve never been able to get a good finish with Minwax. Just saying.

-- Don't outsmart your common sense


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