Painting poplar, to knot, or not to knot

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Forum topic by 404 - Not Found posted 973 days ago 813 views 0 times favorited 4 replies Add to Favorites Watch
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404 - Not Found

2544 posts in 1574 days

973 days ago

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 1655 days

#1 posted 973 days ago

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.

View 404 - Not Found's profile

404 - Not Found

2544 posts in 1574 days

#2 posted 969 days ago

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

View Bill White's profile

Bill White

3353 posts in 2565 days

#3 posted 969 days ago

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


View jumbojack's profile


1156 posts in 1229 days

#4 posted 969 days ago

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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