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Vinyl Sealer brittle1/21
I don't have much experience using vinyl sealer (or sealers in general).
I spray 1 coat of about 3-4mil mesured with a wet film gauge. Solid content is about 18%. This sealer IS NOT catalyzed and there is no "cure time" according to the manufacturer (mohawk). You spray, it dries, you sand, top coat, ???, profit.
Even when drying overnight this coat seems somewhat...fragile. I can scratch it to bare wood easily with fingernails when I compare it to a rattle can nitrocellulose lacquer (rustoluem cheap stuff that I use for prototyping). Yet I have tried a homemade crosshatch test using various tapes (masking tape, insulating tape, double stick, etc) and no signs of adhesion issue.
Is it normal since it is supposed to be easy to sand. When I sand sand It it makes a white powder. When I scratch it with my nails it more like white sand (it not soft but my finger nails bites into it easily whether I press hard or lightly).
I have tried it on Bare wood sanded to 120 grit. Just enough to remove mill marks ans have as much bite as possible.
I will coat it tomorrow with a CV
the wood is ash sanded to 120 grit.
the wood is raw I used rough lumber scrap to test it