Reply by CaptainKlutz

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Posted on AquaCoat question

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1892 posts in 2006 days

#1 posted 08-08-2019 07:37 AM

Hmm, could be fish eye, could also be water based finish – raising grain or fibers?

Don’t use WB lacquer, but anytime I apply first coat of water based acrylic/poly finish, I see defects.
Unless I seal surface with shellac, or light coat of same water based finish; and then sand it smooth FIRST; always see grain raising defects.
Some folks recommend wetting surface with water, then sanding when dry to pre-raise/remove the grain fibers; but it only helps a little IME. Still see bumps and holes in the first coat of WB finish. Fine grain woods like maple, create a lot more defects than large grain wood like oak.
Suggest try looking for fibers sticking up into the finish using magnifying glass with side light, probably right next to the impressions or rings. If you find fibers, then it’s not contamination. It’s a normal WB finish challenge.

Best Luck!

-- I'm an engineer not a woodworker, but I can randomly find useful tools and furniture inside a pile of lumber!

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