Cover Stain: I tend use cover stain less than the two products above for one main reason. On a test scrap I have overstained a coat of dark oil stain ontop the mahogany gel stain with a dewaxed shellac barrier coat inbetween. To mix your own shellac, pour a measured amount of denatured alcohol into a glass or plastic container. There are good reasons why Shellac, despite being less popular today than in its prime, is still in widespread use. Yes, you can stain over shellac and then seal the stain. I tried General Finishes gel stain over waxed shellac once (shellac was a seal coat over poplar to prevent blotching), not knowing better, and it seemed like even with a light sanding the stain … But you should plan to seal the stain as its binders alone won't keep it from rubbing off. It seemed to work great and I’ll be able to assemble/deliver this unit tomorrow. Get shopping advice from experts, friends and the community! Water softens shellac and overtime it will wear away from the surface. Over that I wiped on a coat of Bullseye Sealcoat dewaxed shellac. If the cotton ball sticks or the finish softens, it’s varnish, lacquer or shellac. Apply 2 to 3 coats of paste wax and buff between coats to a … That would be known as a 'glaze' (color coat trapped between other layers). 3. Shellac (/ʃəˈlæk/) is a resin secreted by the female lac bug on trees in the forests of India and Thailand. There are 32 ounces in 2 lbs, and 8 pints in a gallon, so 32 divided by 8 equals 4 ounces of flakes. When it dries, any dust or dirt essentially glues to it. Shellac is a safe, food safe wood stain made from a resin secreted from the female lac bug and ethanol. Paint with Chalk Paint® 4. Thanks for … Many floor finishers believe that this is the most beautiful floor finish in the world. Oil based or waterborne stain are both compatible with shellac. On interior surfaces, Cover Stain® dries quickly and has great hiding power providing outstanding stain killing and enamel undercoating performance. Shellac has enjoyed a long run as a popular topcoat for wood. Shellac can be used over any stain except alcohol-base types and over any filler. If you realize you need to shellac after applying Chalk Paint®- that is okay…go ahead and apply the shellac. Long-lasting; Colors and tints can be added From the late 16 th century up until the 1960s when synthetics products became widespread in their use. Weigh the proper amount of shellac flakes. Zinsser "BullsEye" brand shellac is the most commonly available premixed product. Cover Stain® is the only interior / exterior primer, sealer, stain sealer and bond coat that dries for recoat in only two hours. Shellac is one of the most durable finishes and easy to repair too. Offers excellent adhesion to glossy surfaces, including glass. Just remember you cannot shellac directly over wax! For best results, thin to a 2 lb. Blocks all odors. It is processed and sold as dry flakes and dissolved in alcohol to make liquid shellac, which is used as a brush-on colorant, food glaze and wood finish.Shellac functions as a tough natural primer, sanding sealant, tannin-blocker, odour-blocker, stain, and high-gloss varnish. Use denatured alcohol to thin shellac; use alcohol or ammonia for cleanup. Wax. The trick to successfully painting over the shellac is in the preparation of the finish and the wood itself. I ran a test on boards of pine and oak, where I used gel stain (minwax), oil stain (minwax), and water-based stain (general finishes) each, over 1) no prep, just sanded to 220, 2) minwax pre-stain conditioner, and 3) 1# dewaxed shellac. When I began to sand the shellac with 320 it immediately burned through the sheallac and through the stain. It is a resin that is secreted by the lac beetle onto the small branches of trees found in parts of Thailand and India. It's good for bookcases, desks, side tables and picture frames — anything that won't be exposed to extremes. The color of shellac can vary from light yellow or gold to deep orange or reddish-brown. After the shellac has deteriorated a few years in the can, the finish you apply over it may wrinkle. Apply the shellac at container consistency and let dry for 2 hours. Anything over 100 years would be shellac. Zinsser 123 water based primer, Zinsser Cover Stain oil based primer, and Zinsser BIN shellac based primer. Stain was still a little tacky but the shellac dried fast and I applied additional coats of shellac at 2-3 hour intervals. Excuse me for being obtuse, but finishing is the area of woodworking about hich I know the least and which gives me the most problems. Wetting down is great for reducing patchiness when applying stain. Also works great for sealing wood, knots and drywall prior to applying paint. But you should plan to seal the stain as its binders alone won't keep it from rubbing off. Order online at Screwfix.com. The guideline with shellac is "the thinnest coating … The rest of the test pieces are all sanded quickly with 200 grit sand paper, and painted with 3 different primers. Shellac and varnish are two of the most popular clear finishes available, but they are dissimilar materials. Blocks stubborn and persistent stains including water stains, marker pens and more. Using Shellac Shellac has an intriguing history and interesting origins that could be the subject of a whole article in itself. Lightly sand after using to prevent paint from crackling. If you ever set a wet glass on shellac finished furniture, you'll notice a white ring. It takes longer to dry and it doesn’t dry as hard. Shellac is a resin that is used to treat and seal woods. FOLLOW UP: I applied 3 coats of shellac over stain 12 hours after applying the stain. It just melts with alcohol that’s it’s main fault. As with shellac, water-based polyurethane won't hold up well to heat and chemicals. Thanks Jerry, Once I apply the shellac can I then apply my finish over the shellac? A third issue is shelf life. It was the industry standard for turners at one time. Depending on the state of the shellac, you may even need to consider applying a thin coat of primer before you paint the final coat. Liquid or water spills will appear as a large white stain on the shellac finish, while condensation from a cup or glass can cause a white water ring when left on a shellacked surface. Varnish is not wood stain, because wood stain adds color or pigment to the wood surface and varnish does not. Suitable for use on interior surfaces and spot priming of exterior surfaces. Sand the floor with 120 to 200 grit paper and remove all dust. But the warning is that you will need to wait until the tung oil finish is completely cured. as to the shellac over the gel stain, shellac is compatible with any finish.. Shellac has a very short shelf life; old shellac does not dry properly. Varnish, when used as a final protective coat over two or three quick drying coats of shellac, doesn’t re-wet or soften the shellac … Benefits of Shellac. If white spots form on the shellac, the likely culprit is water or condensation. If there is no effect, it is paint or polyurethane. Thinned shellac is recommended for sealer coats. Yes, you can stain over shellac and then seal the stain. Seals porous surfaces with excellent enamel holdout, even sealing bleeding knots and sap streaks. Take the Cotton Ball Test to find out. If you want to stain over an existing stain on wood, choose a shade that is darker than the original stain. Cover stain has the same properties as BIN shellac and if time allows I will also use it to cover stubborn stains or prime bare wood. Minwax Polycrylic is an example of a fortified water-based polyurethane than can … Once shellac is dissolved in alcohol, it begins deteriorating (more rapidly in hot temperatures). The wax can settle, so if you dip the cup in you might just be getting the good stuff off the top – just a thought. Shellac-based primer, sealer and stain killer. Shellac is perhaps the worst choice for the outdoor use. Using Wax over a Shellac Finish. Click to see full answer Similarly, you may ask, how long should stain dry before Shellac? If you want to stain the wood lighter or if the wood has a lacquered finish, you will need to strip or sand away the original finish. Oil based or waterborne stain are both compatible with shellac. Be sure to strip the shellac, clean the surface, and sand as necessary. I had planned on then sanding before applying several coats of Arm-R-Seal. ... Shellac is a really good finish for many applications, I don't see any problem with using it as you have stated. It doesn’t tolerate hot fluids either. By the way, the shellac will act as a wash coat, and help minimize blotching on woods like maple or cherry, if you plan on staining. All-natural and non-toxic, this shellac is safe for use with children's toys. A more practical use for paste wax for today's modern woodworker is to use it over an existing polyurethane, varnish, shellac, or lacquer finish, to give a piece an unmatched luster and shine. That will take at least a week or so to be sure. It takes longer to dry, as a painter and decorator, time is money, I need products that dry fast. Since the solvent in shellac is alcohol and not mineral spirits, it will not re-wet or remove an oil based stain. To make a pint of 2-lb-cut shellac, you need to do a little math. Shellac can be used over any stain except alcohol-base types and over any filler. It is available in a clear or amber tint. The Differences Between Shellac & Varnish. Amber or Clear. finish to use over water based stain? It does have a limited shelf life -- generally 6 months for pre-mixed products, 3 years for flakes. That would be known as a "glaze" (color coat trapped between other layers). Apply TWO uniform thin COATS of Shellac. They all held up MUCH better than the first two in the scratch tests. Buy just enough for the job, and junk any leftover shellac. I'd like to create a darker overtone. Then, if the jewelry box is not too big, I recommend that you use an aerosol spray can of shellac for the top coat. Shellac is a versatile, non-toxic wood finish that enhances the natural grain while adding smoothness without the plastic-like qualities of polyurethane or lacquer. Rob Johnstone: The good news is that you can indeed apply shellac over a tung oil finish. From Paul Snyder, forum technical advisor: You can apply oil-base varnish (non-poly) over shellac without any problem. 2. Suggestions for using amber shellac over stain? Shellac brings out the rich warmth of wood grain making surfaces look soft and natural instead of plastic. Touch the finish in an inconspicuous place with a cotton ball dampened with acetone nail polish remover. cut (2 parts denatured alcohol, 5 parts shellac). The word “varnish” is an umbrella term, so it does not refer to any specific product, but rather to a grouping of products or a finished effect. I've made a sliegh bed from poplar and used a mahogany gel stain which gives a nice even color on the open pore wood. When it softens with water, it has a tacky feel which is a magnet for dust. Thinned shellac is recommended for sealer coats. Features: Will adhere to glass and ceramic. Shellac is water thin and brushes out well, even over itself. 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