Reply by Kelly

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Posted on Sealing Butcher Block Counter?

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3497 posts in 4000 days

#1 posted 07-03-2019 06:06 PM

If I’m going to top seal (e.g, resin, poly) something with a lot of end grain, I keep flooding it with thinned poly, as long as it will take it.

I start out with at least a 30% thin and go until it puddles, and let that soak in, then add more, as I can. I come back the next day and go again, with about a 15% thinned mix, doing the same as with the first coat.

I let all that dry for several days, then apply my top coat.

I used to make burl tables, some which sat in front of well used fire places, and they never cracked or split, because they could no longer lose moisture and shrink.

One slab I did was about 6” thick. Well into doing this, I dropped my brush. When I picked it up, I looked up and the bottom was wet. With that kind of penetration, and after the solvents gassed off, you, basically, had a big piece of plastic.

It was not uncommon for a slab or stump to eat several gallons of Varathane’s Plastic Oil, or thinned poly.

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