Need help with finishing pine "sanded" plywood

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Forum topic by NicP posted 01-21-2017 10:35 PM 898 views 0 times favorited 6 replies Add to Favorites Watch
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3 posts in 1404 days

01-21-2017 10:35 PM

Topic tags/keywords: question pine finishing sanding

Hi everyone. I’m new here and just having some fustration with a project. I am building some storage and shelves for my garage and i had some extra 3\4 pine “sanded” plywood. Well I am trying to get it smooth and cant figure it out i sanded it with 220 but it just doesnt come out smooth no how much i try. I would like to paint it white. The finish doesnt have to me mirror finish i just want it to look decent. I put some killz oil based primer on it and sanded and then did it again but it just still isnt even close to smooth in the rough areas. Hindsight i should have just went with birch plywood but i didnt know this was gonna be such a hassel? My next attempt was going to be to try and smooth it out with puddy. Is this a good idea or not? Any advice and help would be greatly appreciated.

6 replies so far

View Kirk650's profile


680 posts in 1662 days

#1 posted 01-21-2017 11:25 PM

I’d work it over with a good ROS, probably starting with 150 and then using 220. Surely it’ll smooth out.

View Madmark2's profile


1813 posts in 1502 days

#2 posted 01-21-2017 11:45 PM

Skin is not thick enough to sand. The more you sand the worse it will get. Spackle a skim coat and paint it with a nice thick enamel – two coats!


-- The hump with the stump and the pump!

View NicP's profile


3 posts in 1404 days

#3 posted 01-22-2017 12:09 AM

Thanks for help man! Seemed pretty good after that. Next time i will buy some better wood for sure. haha

View Millertime24's profile


6 posts in 1452 days

#4 posted 01-22-2017 01:25 AM

Sanding sealer should help as well.

-- -Mike

View rwyoung's profile


412 posts in 4385 days

#5 posted 01-23-2017 04:47 PM

I’ve used BIN primer, the stuff that is shellac based. You can tint it a little too. Worked great on inexpensive plywood when making shop cabinets. If there are voids in the ply, some bondo or water putty or similar. Sand, prime, light sanding and then enamel.

Sprays easily and quickly. Drys very quickly too so nearly everything can be completed in one (long) day.

-- Don't sweat the petty things and don't pet the sweaty things.

View MrRon's profile


5954 posts in 4157 days

#6 posted 01-23-2017 05:37 PM

You should apply a coat of shellac (the dewaxed type). Once dry, lightly sand with 220; repeat and then apply your paint

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