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Fixing a bad polyurethane job

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Forum topic by Gwell posted 08-04-2016 09:19 PM 289 views 0 times favorited 3 replies Add to Favorites Watch
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Gwell

2 posts in 120 days


08-04-2016 09:19 PM

I built a mini arcade with my son and painted it black. I applied some water based polycrylic on it but didn’t come out too well. There are some uneven spots. As if some spots are smoother than others. I did sand after the first coat. I also used an HVLP gun to get smoother results. But I think I had the pattern set to small. As is I applied too much finish in certain spots. And ideas how to fix?


3 replies so far

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MadMark

976 posts in 912 days


#1 posted 08-04-2016 09:23 PM

Belt sander?

M

-- Madmark - Madmark2150@yahoo.com Wiretreefarm.com

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Gwell

2 posts in 120 days


#2 posted 08-04-2016 10:33 PM

Are you asking if I used a belt sander? No just by hand. Nothing too aggressive either

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OSU55

1056 posts in 1449 days


#3 posted 08-05-2016 01:11 AM

Not to be a smarta**, but #1 practice with the gun and selected finish before using it on a project. Kraft paper, cardboard, thin plywood all work. #2 MW polycrylic is about the softest, most useless wb finish out there – get something decent. To salvage this, add a couple more coats (after practicing) and then see what you got. Don’t remember if you have to sand polycrylic between coats – don’t think so. If you using satin, you might get away with the finish off the gun. If using gloss, it will require finishing the finish.

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