Using the same finish for years,Mosser’s Simple Success (solvent base), always had excellent results. Now from the same can I finished table tops of silky oak, spalted maple, red oak, cherry,and hard maple. At the same time a tops of poplar, one of apple, and one of cherry look dry and scratched even after 3 coats thinned to 25% poly 2 coats 50%. I have re sanded these tops back to bare wood twice now. My third attempt failed. I will sand back to wood again today but any suggestion on what is happening? The finish is being applied to bare wood.
Thanks,
Rich
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I could be mistaken but as far as I know, Moser's Simple Success is a waterborne finish. I can not find any online reference to a solvent based formulation.
There is still one available. Directions are to thin with mineral spirits to a 75% spirits to 25% poly. I purchased two more Quarts in January.
Rich
Welcome to FWW Knots.
I assume you mean the oil based varnish sold by Woodworker's Supply.
This isn't a very thick finish as it comes from the can, only about 35% solids by volume. Thinning with 3 parts thinner (75%) and 1 part(25%) varnish will give a VERY thin material, with less than 10% solids by volume. In total you have less than one "full strength" brushed on coat. I think that is your problem. With that little varnish you wouldn't expect to achieve a full coating.
There should be no reason to thin that much. My guess is that the reverse was what should have been the directions for use as a wiping varnish, 3 parts varnish to 1 part thinner. Give or that a little that proportion should make an acceptable wiping varnish consistency.
Remember too, even at the thicker consistency as I have given it it would require three coats to be equivalent to one coat of brushed on varnish. For table tops most people like the protection they would get with more like 7-10 coats of wiped on varnish.
You can apply the wiped on varnish in sets--just wait long enough for the coat to no longer be tacky when you lightly touch with your finger and wipe on the next coat. You can apply up to about three coats this way without sanding before you should wait overnight, lightly sand, and then apply the next set of three.
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