Painting poplar, to knot, or not to knot

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Forum topic by 404 - Not Found posted 12-02-2011 02:11 AM 1262 views 0 times favorited 4 replies Add to Favorites Watch
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404 - Not Found

2544 posts in 3173 days

12-02-2011 02:11 AM

I’m on my first job made of poplar at the moment and I noticed something peculiar. The white PVA glue I use for everything has turned brown in the squeeze out where there’s green heartwood. This job is going to be painted and I’d just like to know if I should apply knotting solution (shellac) to the knots and areas where the heartwood is showing. I had hoped to use waterbased paint (hvlp applied) for speed of drying on this, or should I go oil based?
Any advice you can give me would be much appreciated.

4 replies so far

View fussy's profile


980 posts in 3254 days

#1 posted 12-02-2011 02:20 AM

I would seal the knots with shellac just as a precaution. Poplar isn’t reisonous like pine, etc., but just to be sure. If you’re gooing waterbaserd, raise the grain and sand down first. Poplar takes paint really well.


-- Steve in KY. 44 years so far with my lovely bride. Think I'll keep her.

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404 - Not Found

2544 posts in 3173 days

#2 posted 12-05-2011 07:03 PM

Thanks for that Steve, I have white shellac sitting on a shelf that will do the job.

View Bill White's profile

Bill White

5128 posts in 4164 days

#3 posted 12-05-2011 08:58 PM

I’d use some Zinsser Seal Coat as a sealer. Sand the nibs and paint away.


View jumbojack's profile


1685 posts in 2828 days

#4 posted 12-05-2011 09:02 PM

Since you already have the seal coat use it, but poplar knots and poplar in general only need a quick Zinsser 123 prime, and light sand and then paint. Those knots will pose no problem.

-- Made in America, with American made tools....Shopsmith

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