Likewise, it’s their only real line of oil-based stains, so I doubt they’d put actual varnish in with it. Shellac is thinned with denatured alcohol (DNA). Being “natural,” it will probably have less actual pigment in the stain, though many such stains have both pigment and dyes to comprise their colors. finishing So bottom line is to go straight to the MWTung Oil Finish and not bother with the other “stain” as it seems to be a non-starter. it dries in less than 15 minutes, I then return the items buffing them with 0000 steel wool - beautiful finishes! I would be less concerned about the oil not curing due to oxygen lack (although it surely will take 20-30 times as long!) He never even touched it…the vapors got to him and he had to take benadryl. I add a few drops of green Transtint with it to cut the “red” a bit, because the Mission Brown color is a bit too reddish for my tastes. What is the difference between wiping polyurethane and wiping varnish? The polyurethane part is already polymerized (but obviously not very long, or it wouldn't be soluble in solvent). Therefore, I try to avoid it unless I know what it actually is. | Privacy Policy maple. Tung oil (real and pure) yields a beautiful finish both in sheen and water resistance. I am going to try first bleaching it with oxalic acid, then hand rubbing several layers of pure tung oil on it. Or do I have to wait? @Damon Water might dewet on the surface of oil, that doesn't mean that the oil is impervious to molecular water, and it's possibly less impervious as a liquid (ie before polymerizing). I have found in wood turning that tung oil will build better with several coats. I can’t tell a difference in the “pop”. Minwax just followed suit. For a low odor/water clean-up clear finish, apply Minwax® Polycrylic® Protective Finish after 24 hours. In your response to the Rustoleum Ultimate you wrote about oil-based products, but did not address the fact that RU is water-based. Think of plant leaves, for example, that have a waxy/oily leaf coating. Just like a polyurethane. Latest Blog Entries | Why is Soulknife's second attack not Two-Weapon Fighting? Comment from contributor I: Will the thinned shellac work much like the TO Finish “AFTER” the initial coat? I spent many months drying this lumber to the proper MC (8%) and from what I've read here, maple is very hard to stain, so I'm just going to leave it in its natural state. Rustoleum Ultimate polyurethane primarily consists of, woodworking.stackexchange.com/questions/1496/…, MAINTENANCE WARNING: Possible downtime early morning Dec 2/4/9 UTC (8:30PM…, “Question closed” notifications experiment results and graduation. Latest Projects | From contributor C: Forum Responses @JasonC, When I was a teenager, I made a set of picture frames for my uncle out of select pine (very clear southern pine, I believe it was). What to do with a mineral-oil finished desktop, Polyurethane or similar on multiple sides at once, quickly, no drips. Experimentally I've even applied it immediately after the oil, with the same result — no visible difference. Oil based is similar but it has more of a tendency to yellow over time so I don’t use it often. Sadly im not surprised though. However, polyurethane is by no means a single product and the above does not apply to Rust-Oleum's Ultimate as it's a waterbased poly! Might be worth considering a dewaxed shellac as an interface between the two, which would allow you to go ahead and apply the poly without worrying about the oil drying. So, a.) Matrix obtained by recursive multiplication and a cyclic permutation, Scale of braces of cases environment in tabular, Some strange moves in Polgar vs Najer (2009). I don’t think the MW TO Finish is all that bad of a product, probably acting very much like any oil/varnish/solvent blend that we’d concoct at home…except we’d do it with better ratios and our choice of oil. That will simplify things quite a bit. Tung oil (also known as China wood oil) comes from the seed of the tung tree and was supposedly introduced to the West by Marco Polo. If there is enough actual oil in it, it will probably pop anyway. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. After 5-10 minutes, buff evenly with a clean, lint-free cloth. Recommended finishes include Minwax® Fast-Drying Polyurethane or Helmsman® Spar Urethane. Polycrylic vs. Polyurethane What is Polycrylic? If you like the subtle tan/yellow coloration BLO provides, an oil-based polyurethane should provide a similar tinting. Chinese artifacts brought up from the deep that were finished many years ago with tung oil are … Tung oil does penetrate the wood, but it also creates a tough, hard topcoat that doesn’t yellow over time. All areas were treated with the Minwax Precondtioner prior to staining. Topic tags/keywords: The word “finish” is pretty deceiving, implying that it has some poly or something in it or that it can be the “last” of what you should do. Which will of course still result in a "closed" finish, but not one that is nearly as durable. You do tend to see an increase in drying time, but contrary to many statement to the contrary online the oil will cure perfectly well under a coat of poly, because the varnish is not at all a perfect oxygen barrier. Using dyes takes a bit of experimenting to get the color right. Two coats are recommended. I would thin down the first couple of coats with pure turpentine, as substitute tends to yellow. Sand to obtain a smooth, uniform surface. The most significant effect can be an uncontrollable beading, which prevents any sort of even coverage. Question is: Can I apply polyurethane over an oil before the oil completely cures or do I have to wait? Therefore, I try to avoid it unless I know what it actually is….”. Such an act makes me want to cry. BTW, some people (like the Canadians) thin shellac with grain alcohol because they can’t get DNA. I am using Mission Brown Transtint with thinned shellac for the base color coat of my kitchen cabinets (which may never get finished). "To come back to Earth...it can be five times the force of gravity" - video editor's mistake. Some use transtint to “pop” the grain. March 30, 2008, KnowledgeBase: Finishing: General Wood Finishing. How can I determine when a linseed oil finish has cured? wood finish What I do NOT understand is their “Natural” Wood Finish and HOW or IF it differs from their “Tung Oil Finish” product. Minwax® Tung Oil Finish. Anybody have any experience with Chris Schwarz's "American trestle table". Learn More. And why oxalic acid? a tip/strategy to share? “Oil stain” products tend to just keep soaking in and dont really ever build into a thick finish. Looking for help with ... Are you unsure of which tools, or hardware, you need, or which brands to buy? PU pulls water when drying, both from the air (on one end) and from the wood (on the other side). Being an oil stain, it will naturally have some penetration due to the oils. Question I recently made a top for a kitchen cabinet out of maple that has been under 20 feet of water for at least 107 years. stain Can I apply polyurethane over oil before oil cures? What mostly goes unacknowledged is that the usual 'drying' time allowed for BLO before varnishing means that in fact. Almost took him to the hospital! ;-). You should not have used it in this instance as the wood will develop its own color with age. FWIW, blotching does not seem to be an issue with either product, since neither seems to actually “stain.”, -- HorizontalMike -- "Woodpeckers understand...". Top up your coat from time to time depending on the amount of use your table will get. It helps keep them clean, but it still allows for transpiration. My favorite is the Zinnser Seal Coat (100% dewaxed shellac) dilluted 50/50 with DNA. | Do Not Sell My Data I think that what you wrote is correct, but it did not answer the question. You will need to apply further coats without thinning until you build up a really good finish which should be quite resilient. You'll have significant application difficulties, as you'd expect applying a water-borne product to an oily surface. I reached the conclusion that they are moisture cured from this article although it concerned types of polyurethane used on metal. Thinking of using pure tung oil for your next project? Share your tips and challenges ... Before you pick up those woodworking tools, take the time to ensure your safety in the shop! The other random bit of info that I found is that Rustoleum Ultimate polyurethane primarily consists of: Neither of which I understand. As a rule no waterbased product should ever be applied to an oily surface.
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