This is the acrylic craft paint like you can buy at Wally World. If it is scraped from the twigs, the result is known as “sticklac”, but if it is knocked free from the twigs using wooden mallets, the shellac is known as “grainlac.” Both are sent for additional processing. A lac insect, about the size of an apple seed, ingests tree sap which undergoes a transformation before being secreted as a shell-like shield that covers the bugs. In fact, I have yet to see shellac not adhere to any base coat, especially if you scratch the earlier layer to prepare for your shellac. I don’t need spray finishes – I got pretty good with a brush and a roller – and even better with a cloth pad, which I really prefer – along with a well-sharpened card scraper used with a light touch. Spraying shellac results in an even smoother finish which greatly reduces the amount of sanding during finish work.". Here in Canada we don’t have Naptha. Other than polyurethane, I have not heard nor experienced any problems with adhesion to shellac except for the lacquer mentioned above. At some point a worker jumped into the containers and, with his feet, rubbed the shellac against rough-textured sidewalls to break open the seeds and release the bug remains. The first number after the year indicator is the month of mixture. Today, many woodworkers find fault with shellac because of unused shellac that has been mixed degrades over time – that is another reason for the lack of respect. Can you put shellac or any type of sealant over chalk paint? It took 14 layers to get the build shown in the photo , way too much time spent and muscle depletion for me. It is, however, OK to use an oil-based urethane over shellac. The concoction was then rinsed and spread onto concrete floors to dry. Further disrespect for shellac could be because we do not realize its widespread use, most of which are not furniture-finish based. Spraying shellac results in an even smoother finish which greatly reduces the amount of sanding during finish work. That lack of respect is unwarranted. When done using spray paint or a spray shellac- go outside and holding the can, flip it upside down and spray. Until guitar-maker Brian Burns told me that he uses mineral spirits (paint thinner) instead of mineral oil as a pad lubricant. What is Naptha exactly? Rust-Oleum Zinsser 408 Bulls Eye Clear Shellac Spray 12 oz. Finishing and Painting » possible to spray shellac over lacquer? Most professionals agree that water-based varnish is the best product to use over paint. Shellac is most often used in artwork as a sealing finish on wood or other porous substrates that will later be painted over. woodworking • Paint over the existing paint with oil based paint...let it cure for a few days and then apply your shellac. Eventually, as the degradation continues, if you use outdated product, you end up with a gummy mess with which to deal. Shellac will develop white rings from glass condensation, but only after hours of neglect. Paint over the primed area with the paint of your choice. It can also be used as an isolating film between layers of paint… Shellac (/ʃəˈlæk/) is a resin secreted by the female lac bug on trees in the forests of India and Thailand. You don’t have to rush the padded-on mixture to keep a wet edge. Rodney Dangerfield’s famous comedic catchphrase was, “I don’t get no respect.” In the world of furniture finishes, shellac gets no respect. Then one day I accidently dipped my brush into a already over thinned shellac finish and decided to quickly slopped some on.. In stock on December 10, 2020. Thank you. Once mixed, either from flakes or directly from a can, shellac can be brushed on, ragged on or sprayed onto your project. Active 7 months ago. It has stood the test of time. 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