Although nitrocellulose lacquer is becoming obsolete, and has been outlawed or restricted in many jurisdictions, understanding it helps put the newer finishes in perspective. If you want to get an idea of how your wood will look without making a purchase, then simply apply a little water to the surface. These waterbased finishes have the pleasing amber color of solvent based products and they look better on woods like walnut, mahogany and cherry than standard acrylic and urethane waterbased finishes. If the wood is varnished and gets acrylic dried on it, then hot soapy water is the only way. Like enamels, lacquer is also durable and can come in different forms: high-gloss, satin, and matte.
Lacquer is made from wood (cellulose), dissolved in nitric acid and other lovely chemicals, and is not related to shellac (despite the similar names). You can also apply a translucent glaze on top of the acrylic lacquer and that shade the currently look but that again is different than staining the wood. Next thing you need to do is spray on sealer and sand that down to real smooth Then you apply the top coat for best results use a spray gun. This paint is super-easy to use, goes on extremely well, and leaves a beautiful and durable finish.
Water-based finishes are based upon the same components as the finishes we discussed above – notably urethane (usually made without the oil), alkyd and acrylic. The preferred method of applying quick-drying lacquers is by spraying, and the development of nitrocellulose lacquers led to the first extensive use of spray guns. Catalyzed lacquer bridges the gap between the application traits of nitrocellulose lacquer and the durability of varnish.
Actual covering capacity may vary depending upon the Type of Wood used, Dilution/ Thinning ratio, Application Skills & Thickness, Surface Preparation & Condition and Surrounding Temperature. Trade of lacquer objects travelled through various routes to the Middle East Known applications of lacquer in China included coffins, music instruments, furniture, and various household items.
The finishing industry responded by developing lacquers containing acrylic resins that are truly water-clear.” Acrylic resins go on crystal-clear and stay that way over time. This is not a hard and fast rule, though, since when you stain will change the look of the filled wood. When lacquer is processed, it is dissolved in a highly flammable solvent that contains toluene or butyl acetate and xylene. I also found a solvent for dry acrylic lacquer at a commercial sprayer repair shop – nasty stuff (flammable, toxic), but it dissolves the drools that form on the gun and sink.
Also, it bears mentioning that ammonia should not be used to clean airbrushes or regular paint brushes. Pure oil is a surprisingly good alternative to a solvent-based lacquer or varnish: Pure oil contains no solvents and comes from renewable resources. Originally developed as a substitute for shellac, NC lacquer is attractive, sprays like a dream, and rubs out better than most other finishes.
In fact, conventional lacquer is one of the worst clear finishes in terms of emitting VOCs into your home; only varnishes are worse. Problem #2 – Roman is partially right here; thickness plays a key role in the tone enhancing or deadening of a wood body – but only in extremes. All the faster drying spray finishes are more difficult to apply because of the more complicated care and adjustment of the spray gun.
Of course, post-catalyzed lacquer isn’t quite as durable as conversion varnish because of the added nitrocellulose, but the difference isn’t great. Water-based lacquer provides a high sheen and finish to wood furniture without the toxic, hazardous, and flammable fumes produced by other types of lacquers. I plan to finish the door panels prior to assembly with a finish compatible with the lacquer.
If you’ve ever sprayed nitrocellulose lacquer directly onto spongy wood like poplar, you know they absorb quite a bit before the film starts to build. CAB-Acrylic lacquers are made with acrylic resins and they dry water white”, meaning they will not yellow over time. I bought aged and rusted tee posts and aged and split treated wood posts for my fence project. Minwax® Clear Aerosol Lacquer can be used on furniture, spindles and other projects where the convenience of an aerosol spray is desired. A water-based lacquer, which can be, used either straight onto bare wood or over Chestnut Products Acrylic or Cellulose Sanding Sealers.
You would put that on after you prime it and paint your acrylic artistry on it. For best results you should spray it on. Using a spray gun is easy but you’ll need the equipment for it. You don’t have to go there if you don’t want to. Best of luck on your project. Since AWR is an acrylic lacquer and redissolves upon subsequent recoats, the clear coat as an isolation coat is necessary to prevent color bleeding of the original color. Lacquer is quick to dry and if you are not skilled enough you may get good results such as brush strokes. Before we really get into the various household chemicals useful in removing paint from various surfaces, I feel it prudent to mention a few words on safety.
On the other hand, spraying is not at all difficult, and if you’re willing to devote the time to learn a spray gun, similar to the time it takes to learn woodworking tools, spraying is fast and produces almost perfectly level and dust-free results as long as you’re using a fast drying finish. You can then use lacquer thinner to correct a number of defects, including impact damage, scratches and cracking.
Sand it off carefully with 220 or 320 grit sandpaper until there is no residue on the surface, and the pores are filled flush with the wood. We recommend spray for all coats in this situation to prevent intermixing of the various layers & possible color modeling. Just be careful not to deeply scratch the finish and certainly do not sand off the finish to the point where you reach raw wood.
Yellowing of the finish is a problem over white and painted finishes (yellowed lacquer over a blue paint will turn it green) or if your intentions are to retain the natural color of the wood as much as possible – as in maple or birch. However, because the uralkyd molecule is large, some urethanes may exhibit a haziness if applied too thickly and are optically different from lower molecular weight resins like shellac and lacquer. These seven can be reduced to four depending on whether or not you intend to use a spray gun.
Acrylic lacquer is more durable and better for floor coating, while nitrocellulose lacquer is more often used on furniture and decorations and can be touched up easily because it does not set in the same way as acrylic lacquer. I believe the SW cab-lac has a 25% solids by volume so if you reduce it 50% you are now only spraying 12.5% solids in each coat not to mention a lot of lacquer thinner be evaporated away for nothing. If you want to get a really good finish have some one spray the paint or Lacquer on. or just brush it on.