It is usually sold in drug stores in a concentration of 70% by volume because it is antiseptic at that concentration. Paddler Store-bought shellac is usually sold in a heavier three- to four-pound cut, and then thinned accordingly. Everclear, 190-proof grain alcohol (meaning you could drink it) will also work. Doesn't really take much, I spray it on a cloth and wipe the wood down. It’s also cheaper than denatured alcohol. Re: Thinning Shellac Mike, If my memory of some rather long-ago chemistry classes has not totally failed me, methyl hydrate is a common name for methyl alcohol It is methane (natural gas) with one hydrogen replaced by a "hydrate" group, or simply, an -OH group. Methanol alcohol is cheaper, and many home store brands use 40%+ methanol. You also thin liquid shellac with alcohol. I would use alcohol because it drys faster, but the MS is cheaper. Shellac cut with this solvent gives a smooth film of high gloss and good color, and is a good primer for floors, furniture, wood, and plaster. "Denatured" alcohol is ethyl alcohol that has had methyl alcohol mixed with it to make it poisonous to drink. Here is Kleen strip DNA ingredients, with 50-55% methanol:. THINNING RATIOS. Fortunately, denatured alcohol dissolves shellac, but not lacquer. I generally use paint thinner/MS. Denatured alcohol is ethyl alcohol, or ethane (a two carbon molecule, as you surely know with some toxins added … DENATURED Alcohol, Mohawk Shellac Reducer / (Behlen Behkol B650-2816), is formulated specifically to dissolve shellac flakes, and dilute or 'cut' liquid Shellacs. Searching for dewaxing Bulls Eye shellac on google came back with some promising hits. Will they cut … It’s widely available in the USA as Denatured Alcohol (additives make it unfit to drink), but difficult to obtain in Canada. I don't know whether isopropyl alcohol will thin shellac or not. Simply dab the surface with some denatured alcohol. The exact ratio of alcohol to flakes (referred to as the pound-cut) isn’t critical. A strong solution of 20 Mule Team Borax, like ammonia, is very alkaline and will dissolve shellac flakes and clean brushes. I have lots of Lacquer thinner, Naptha and denatured alcohol from when I was experimenting with shellac and lacquer on some veneered loudspeakers. Is it OK to clean brushes with these after a oil based Alkid paint job. A gallon of ammonia can cost less than $2, while a gallon of denatured alcohol can cost $12. Thins shellac, lacquers, resins and certain inks. It can leave behind a residue but it shouldn't be a problem if your finish is otherwise MS compatible. If it gets sticky, then you’re dealing with shellac. That's just not an option for me. Shellac can be redissolved in alcohol, so it’s easy to just soak the brush in some alcohol to soften the bristles the next time that I need to use the brush. Here is Crown DNA, it shows 70-75% methanol alcohol:.. Crown Denatured Alcohol is an excellent shellac thinner. The preferred alcohol to use is ethyl alcohol (ethanol), the same stuff booze is made from. Try a couple different cuts to see what works best for you. You do not drink isopropyl alcohol, either. Need to carefully check the MSDS/SDS on denatured alcohol (DNA) when you buy it. And please don't say drive to a neighboring state and buy some there. If I want to preview the finish, I'll spray it on the wood. How are Californians thinning shellac nowadays seeing as how denatured alcohol is now a banned substance here? And if you do that, then you may want to thin the 3lb cut Bulls Eye (check the can for the exact cut) with your alcohol of choice down to a 2lb cut or thinner for sealing. 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