joe brierley PPS Craftsman Bar Member. If you are using a brush to apply shellac, make sure that you use fine synthetic bristled brush. (Photo by Lee Valley Tools) Thinning lacquer Lacquer thinner is the thinner for any type of lacquer, whether for a nitrocellulose brushing lacquer, or a nitrocellulose, CAB-acrylic, or catalyzed spray lacquer. 1 How to Tint Lacquer 2 How to … Always wear safety glasses and breathing protection when working with lacquer or any finishing product. Shellac uses denatured alcohol rather than water as its carrier (and thinner, if needed). An uneven spray pattern, sputtering gun or grainy feel to the surface after the lacquer dries are all signs that the lacquer should be thinned. I don a pair of thin gloves, dip a rag, sponge or Scotchbrite pad into the shellac, flood it onto the wood, then wipe it off … It can be ignited by a motor, fan or air conditioner, or any spark, flame. … For WB lacquer I used the #3 needle (blue cap) which is 1mm. However you apply the shellac, allow the first coat to dry about two hours, then sand with gray, 320-grit stearated (self-lubricated) sandpaper just enough to remove dust nibs and raised grain. I may not be in the best forum for my question, please advise if that's so. As for spraying shellac, it's done all the time, … It gums up sandpaper unless applied very thin. I have a bed of nails on the turntable … In-Store pick up. It’s because of this deterioration that many woodworkers recommend dissolving one’s own shellac flakes in denatured alcohol and using the shellac soon thereafter. FREE From $20.99. Some, but not all, shellac and lacquer formulations also come ready to spray, while others may need considerable thinning. Spray the shellac thin, just like you would lacquer, but you have to be very careful if spraying it vertically. You should test first. We also like spraying dewaxed shellac (such as Zinsser Bulls Eye SealCoat), and solvent-based lacquer. I spray shellac with my Pasche air brush using the largest tip available and I think I’m running about 25psi. Spraying Shellac - problem has 'surfaced' Thread starter donnyb; Start date Apr 28, 2018; D. donnyb Member. Step 6 … The flake mixed with DNA is better than the hardware store canned. If you are new to spraying, let me strongly suggest you get some cardboard boxes and practice spraying on them. Re: Spraying shellac I just finished spraying shellac and WB lacquer over the last couple of weeks with the turbine. cut de-waxed shellac applied by rag. Shellac’s quick dry time reduces runs. Shellac-base primer-sealer; For interior and spot exterior use; Greatest stain sealer; Seals knots and sap streaks; Seals pet, smoke and musty odors; Sticks to all surfaces without sanding ; Lightning fast dry - recoat in 45 minutes; FOR BEST RESULTS. Zinsser Bulls Eye Shellac, 473... (6) 4.0 out of 5 stars. I generally spray a 1 1/2# cut (with a 2mm needle), and use either 99% isopropyl alcohol or denatured alcohol, depending upon the temperature/humidity. But, when we wash the brush in warm water and detergent (after cleaning in … If the sprayer's performance is not the best, add some denatured alcohol to assist in fine spraying. Open it up. I have been refurbishing a violin , removing all original paint (yes, paint! I'm hoping to spray … Discussion in 'Spray Painting' started by joe brierley, Mar 26, 2018. This week I want to discuss spraying finishes. First I considered sanding all the shellac off, but didn't think that would be a good idea, as my top was pretty thin already, and I didn't want to over-sand it. If all this isn’t enough to make you question the wisdom of using shellac as a sealer when you don’t have one of the problems mentioned, consider that shellac is a relatively difficult finish to sand. Use this chart to mix the desired amount of shellac: 1-lb cut 1.5-lb cut 2-lb cut 3-lb cut Behkol solvent; 16.0 oz : 24.0 oz: 32.0 oz: 48.0 oz: 1 gallon / 128 oz: 8.0 oz: 12.0 oz: 16.0 oz: 24.0 oz: 2 quart / 64 oz: … you may like. This finish beautifies wood with a lustrous glow that won’t darken or yellow with age. Yes, shellac is a great barrier coat and wash coat, lacquer works well over it. 49 (40) View Wishlist Added to Wishlist Minwax Wood Finish From $8. 6 reviews. Thinning is nothing fancy, pour some shellac in the jar add some alcohol and see if it sprays. I always get asked if I like to spray my poly or other finishes. Varnish dries much slower than the other finishes, and unlike lacquer, shellac and water-based finish, each coat should be allowed to fully dry before the next coat is sprayed. (Four pounds of shellac flakes thinned with one gallon of alcohol produce a four-pound-cut shellac.) If you use it alone, or topcoat with regular shellac, you’ll get a … You can thin them as much as you like, since thinning will not change the coating that is formed. Messages 552. I've only sprayed zinsser bin once before when I was new to spraying. 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. Alternatively, you can use a sprayer to spray on shellac. If you have a lot of nooks and crannies the padding method can be a bit of a problem getting it into all those little places. Unless you thin shellac a good deal, it has a tendency to ridge at the edge of brush strokes and orange peel when sprayed. Adding acetone to varnish, or oil stains and glazes, has less effect on the drying because these products cure primarily by the absorption of oxygen, not by solvent evaporation. Shot it with about 8 thin coats and got a mirror finish, almost … SUNDAY: Then I read on some forums that you can remove shellac with alcohol, so that's what I just did this afternoon. … Apply the coat quickly, but do not attempt to re-brush before … But you need to be aware of a significant difference. Finishes like shellac, lacquer and waterbornes spray well. As long as the temperature is higher than 10 degrees you should be fine. Oil-based varnish, including polyurethane varnish and oil paint, can also be sprayed, of course, because any thin liquid can be sprayed. Thinning Shellac – Great for thinning any shellac product, this product is also compatible with some lacquers. Denatured alcohol is ethyl alcohol, or ethane (a two carbon molecule, as you surely know with some toxins added … Use lacquer thinner to thin lacquer and denatured alcohol to thin shellac. For those reasons, I spray shellac, but I know that there are still those out there who won’t take a dip in the spray finishing pool. Use indoors … For spraying where I want to build with multiple thin coats, I use pretty thin material - for shellac think in terms of 1 pound cut. I can apply shellac 2 ways; 1)pad it on (with a rag ball) and 2) spray it. For spraying shellac I generally use a 2.0mm needle in my Earlex 5000. Water-based finishes, however, tend to coagulate when acetone is added. It will explain the equipment and … But everyone who has used shellac for a while knows that the longer the shellac has been in its dissolved state the slower it dries and the less hard and water resistant it becomes. ), staining , sealing, and now applying shellac… This is the way … You can always thin out pre-made shellac by adding denatured alcohol. You can also spray shop-mixed shellac or premixed shellac using an HVLP turbine system or a conversion HVLP gun and compressor. 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