Fixing a bad polyurethane job

  • Advertise with us

« back to Finishing forum

Forum topic by Gwell posted 08-04-2016 09:19 PM 242 views 0 times favorited 3 replies Add to Favorites Watch
View Gwell's profile


2 posts in 79 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

View MadMark's profile


965 posts in 872 days

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

Belt sander?


-- Madmark -

View Gwell's profile


2 posts in 79 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

View OSU55's profile


1039 posts in 1408 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.

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics