America’s finest brushing lacquer gives a deep rich appearance to interior wood surfaces including, furniture, cabinets, molding, antiques and crafts. Mix a new batch of finish at about a 50/50 ratio of thinner to lacquer, adding solvent until the viscosity measured 15 to 18 seconds, then spray three more coats. They become relatively non-toxic after approximately a month since at this point, the lacquer has evaporated most of the solvents used in its production. Pre Sealing : Soft woods such as Pine and Aspen absorb stain at an uneven rate and may respond better to staining if the wood bas been pre-sealed.
I’ve found that prepared shellac is not widely available in the large home centers, except in spray cans, but is easier to find at a local hardware store or woodworking center. There are 3 coats gloss / 2 coats satin on top (the satin finish is essentially the same product as the gloss, but with suspended colloid to break up the sheen, if I understand correctly). Let the finish cure – Cured finishes buff up better and faster than finishes that aren’t fully cured.
Adding more coats may cause the PC lacquer to crack or peel because of the difference in surface tension between the two types of lacquers. Put lacquer retardant, and also some I believe call butyl cellosolve, to help the over spray blend. Wood surfaces must be clean, free of sanding dust, wax, grease, old finishes, mildew stains or other contaminants.
Don’t spray too much, it will create a sharp line against the rest of the finish. It becomes the most moisture, alcohol, chip and scratch resistant finish you can use. For something closer to a true boiled linseed oil without the added chemicals, try something like Tried & True Original Wood Finish , which is FDA approved for direct food contact in both its cured and uncured state.
They are caused by air trapped in the pores coming into the finish and forming bubbles. The Furniture Guys Book presents ten projects, complete with step-by-step guidance on stripping, staining, varnishing, upholstering, basic repairs, and troubleshooting touch-ups such as stain and scratch removal. For example, in winter and summer, when the air is drier due to a heater or air conditioner running, the wood shrinks.
You can also use the tack cloth to wipe down the wood to remove any sandpaper residue before applying the lacquer. If you use pre-catalyzed lacquer (solvent-based), it will break down with lacquer thinner. Other books such as Flexner on Finishing and Wood Finishing 101, plus hundreds of magazine articles, followed. I apply sunbursts freehand but you can use a masking template held above the body so as not to get a hard edge.
The advantage of wet sanding these lacquer surfaces up to the ultra-fine 1200 and 2000 grits is that the very tiny scratches left on the surface by these ultra-fine sandpapers can be polished out to glass smoothness with a medium or fine liquid polish – such as the LMI Fine Polish FFP. If you use a brush, work quickly and apply lacquer with the grain using a good, natural bristle brush. Sand lightly with #400 sandpaper just to remove those bumps-and be careful not to sand through the wood at the edges.
I have used the regular acrylic lacquer on table and desk work surfaces without problem, and after it has cured for a week or so, it wears well (one specification for a full chemical cure is 100 hours between 60 and 80 degrees, another says 120 hours – 5 days – at 70 degrees). Thinning doesn’t improve adhesion, and you’ll have to apply more coats and use more solvent. It’s essential for a professional looking finish to prepare your wood so that you have a perfect surface for the lacquer.
Sealing the wood prior to filling makes cleaning off the excess filler easier and is a good precaution when applying oil-based filler to mahogany. I’ve got a 14-foot table finished with General Finishes Arm-R-Seal oil based poly and I’m looking to rub out the finish. Sand it with 220 or 240 grit sandpaper to dull the finish which provides better adhesion for the lacquer.
When I have to finish a decorative wooden object that will not be handled much, therefore needs little protection but also has to look and feel as close as possible to its natural appearance, I simply apply a paste wax only. Pre-catalyzed products (lacquer and water-based) offer faster drying times and have a shelf life of about 12 months. If you stain first, seal the wood with one thin coat of finish prior to filling. If you’ve ever purchased commercially-manufactured furniture, it more than likely has a lacquer finish.
If you mess up a guitar on which you’ve spent hours and hours of construction time, it causes much more heartbreak when you discover that the finish isn’t everything you’ve dreamed it was, or worse yet, so bad that you have to spend hours more sanding it down and starting over. Reactive finishes (varnish) — apply two coats to lock in the last coloring material or paste wood filler and let dry until it will sand. You can mimimise this by spraying thinner coats so that the moisture can escape before the lacquer dries.
WET-OR-Dry Polishing Papers FWOD – 600/1200/2000 grits for the very fine sanding of cured lacquer before polishing. To fix fish eye, start by sanding the finish coat as closely to the surface as possible. The Bartley’s is essentially a surface finish that doesn’t soak into the wood to create color/contrast. A spray gun uses air to atomize a finish, which means that it breaks it into a mist. Durability of the finish is slightly better than pure oils (due to added resins), but is usually still inadequate for high-traffic, high-wear pieces.
If you had to do any hole filling then you want to sand that area to match the surrounding wood. Lightly moisten the cloth with water; just enough to tack up the dust and applying light pressure only, wipe down your furniture. It is so fast drying that few people can effectively brush it on. I live in Texas, so can spray outdoors most of the year. Even with considerable wiping the finish seemed to just bead up on the surface. If your lacquer arrives with the nozzle detached, the best way to refit it is with a twisting action.
With these methods it is possible to obtain a mirror flat finish equal to the highest quality dining room tables. Get the wood as clean as possible and let the filler cure for three days before sanding. Once Goudey Water Based Wiping Stain has completely dried, sand the surface of the wood very lightly with a piece of used 320 grit sandpaper, or a piece of 400 or 600 grit sandpaper. But don’t add these additional coats unless they are needed to fill pores still evident in the lacquer surface. Use CAB acrylic lacquer as a crystal-clear alternative to water-based finishes for a non-yellowing film.
WATCO® Lacquer fills in the pores of most wood types eliminating the need for wood filler. Woodwax 22 can also be used over the top of the acrylic lacquer if you want to enhance the finish further. First, among its many economic advantages, finishers spray lacquer; they do not brush it on. The spraying method is the fastest means of covering a surface; some finishers will spray six or more applications of lacquer within an eight-hour workday.
Switch to rottenstone and do the same until the finish is as glossy as you want. This thin sealing coat will form a thin barrier on the wood surface and in the pores that will make the pore filling process easier and keep the pore filler from staining the raw wood surface. If you add a lacquer thinner meant for cleanup rather than thinning to lacquer, the finish will come out of solution and show up on the wood as white fuzz resembling small pieces of cotton.
The entire finishing process described here – from sealing the wood to polishing the cured lacquer – will take from 14 to 21 days to complete. For anyone wanting a more in-depth coverage of finishing, read Flexner’s book Understanding Wood Finishing. Armed with this knowledge, he went on to become one of the world’s leading authorities on wood finishing. Applying a tinted translucent (see-through) finish takes different procedures that I’m not going to cover in this article.
The sanding – or leveling – of the lacquer between coats is at least as important as the spraying process is to achieving a quality finish. Because of the time that must be allotted for the various coats of finish to cure, the overall time span may be a week or more. Shellac does not provide a completely clear finish, but has an amber tint that gives a mellow depth to the finish. This is the most important step in the finishing process to achieving a perfect glass smooth final finish.