I've occasionally used it as stain under film finishes. Restor-A-Finish does not contain tung oil, linseed oil, polyurethane, or any other type of finish. Wait at least 2 weeks after the last application of mineral oil. Lacquer works best as a spray finish, applied to dry wood finish-sanded to at least 220 grit. For these reasons, lacquer is a good undercoat for any other paint product. The fundamental issue of course is that the thinners in lacquer when applied over reactive or coalescing finishes act like a stripper; softening and swelling the original finish and leaving a mess. Yes, you can, but normally one coat of shellac is applied before the gel stain as well. A wet application can cause many paints and finishes to wrinkle or blister, even an old coat of lacquer itself. Under Lacquer Lacquer should not be used over any Waterlox products. When the spraying method is used, care must be taken to begin in one area and work outwards. That changed with the development of nitrocellulose lacquer in the early 1920s. Yes, Minwax® Lacquer Sanding Sealer can be applied over Minwax® Wood Finish™ stains, Minwax® Water Based Stains and Minwax® Gel Stains. Best of all, an infinite colour palette was opened up. There are drawbacks to lacquer however. This is not a will happen, but some testing is … Lacquer goes over some poly - but not the same poly that will go over lacquer. Won't work. Nothing touches Fender's "poly" finish. The two easiest ways to avoid problems are to spray se But for a wooden picture frame, you don't have to apply nearly as many coats – even just half as much will result in a gleaming lacquer finish. The main drawback of lacquer thinner solvent based finishing is the hazardous nature of … It isn't unusual to clear-coat an acrylic paint finish on a metal surface, such as on an automobile, with CAB-acrylic or acrylic lacquer. Lacquered projects can be gift-ready when other finishes are still stuck in mid-cure. Once applied, it also holds polish very well and can be polished for an even better finish. The problem is the lacquer thinner in the lacquer. Lacquer can be used over lacquer-base, non-grain-raising (NGR) and water-base stains and over lacquer-base fillers. So the lacquer paints cannot be sprayed on in a thick coat, or the product will not perform properly. It works by restoring the existing finish. Lacquer needs multiple coats to build sufficient film thickness. The safest thing to do is to use dewaxed shellac over the poly and then you can go to the lacquer without worry. Following is some basic advice for applying lacquer with a spray can, brush, and rag. It seems that would be the best of both worlds. Can I use Restor-A-Finish on lacquered pieces? General Finishes Gel Stains contain urethane, which allows the gel stains to be used for finishing over existing top coats, stains, and paints.. Lacquer can be used to create anything from a deep matte finish to a very high gloss shine. If you google wood finishes you should find lots of info on lacquer and its uses. Lacquer is NOT thinned with alcohol. For aspiring woodworkers, choosing the right finish can seemingly be a difficult task at least at first. We have done quite a bit of lacquer over acrylic paints,use it for cabinets,with a decorative glaze in the detail then put lacquer over it. Nitrocellulose was adopted quickly by the car industry and remained the finish … Applying pre-cat lacquer. Lacquer will tend to flow out creating a glassy finish over the course of a few minutes so be patient. Lacquer can be used on most woods, but it cannot be used on mahogany and rosewood; the oils in these woods will bleed through the finish. Of course you need to test in a inconspicuous place to be sure. One coat is not enough. It’s this makeup that allows to provide a particularly intense gloss finish – it contains a solution of shellac in alcohol, which produces a resilient synthetic coating. The very best way to apply lacquer is to spray it. HOW TO: USE OIL BASE GEL STAINS OVER EXISTING FINISHES. As far as your spray gun goes, denatured alcohol cleans up shellac better than lacquer thinner. Type of Finish: Penetrating. But it was the Europeans who elevated decoupage to an art form. However, the rule of thumb... depends on who you talk to. Warmoths is similarly... pretty tough stuff. I knew parts of the project would not be accessible after construction so I used some spray on lacquer to get into the tight spaces. One good coat is all you need. Lacquer goes over shellac and vice versa, pretty well. I've found it to be more of a problem with conventional varnishes than with polyurethanes but it is always a risk. If another coat is deemed necessary then, once again, this can be applied over the previous coat once this has become tacky. There was a little over-spray on the outside parts but I didn't worry at the time. This is not the end of the world, though. Although nitrocellulose lacquer can be applied by brush (with the addition of retarder ), it is best applied, as intended, with proper spray equipment and some kind of ventilation hood or booth. David’s Answer:. After you have applied as many coats as you feel necessary, allow the final coat to dry for at least 24 hours. Avoid the temptation to over-apply the lacquer, as more problems are created by too much than not enough lacquer. When using a brush only natural bristles should be used, and when wiping it on a clean, cotton cloth should be used. Unlike varnish, lacquer is a type of solvent based product. Some poly goes over lacquer. Laquer is thinned with alcohol so any water or oil based finish will work over the lacquer sealed wood. Lacquer also comes in various sheens. Try it on a scrap piece first as you may need to experiment with dyes in the shellac to get the colour match just right. When you work on antiques most of the time you can just touch up the finish with lacquer. A pre catalyzed lacquer is better, and a post catalyzed is even better. The main one is that your lacquer's solvent may be 'hotter' than alcohol and if so the shellac will be soluble in it, which can lead to crazing after application. Lacquer goes over it ok. DIRECTIONS Prepare existing surfaces first by cleaning well. Shellac is … Q: I would like to spray a lacquer finish over an oil-based polyurethane, but have been told that the two finishes are not compatible. We used Johnson’s paste wax on the lacquer and to this day it is a great finish. With luck, applying the finish on your next project may take less time than reading about how it’s done. Definitely! Question from a Student: For high traffic areas, does it make any sense in spraying a protective lacquer finish, after applying the Linseed and Tung Oil finish. Too thick and it can lead to pre-mature cracking/crazing down the road. Therefore, if you are looking to paint over a surface with lacquer as the finish, ensure that you sand the surface before you can go ahead with the application of the pain. Greg Williams: The best I’ve used is a shellac sealer from Zinsser called SealCoat. Always remember that with lacquer, less is more (so to speak). The easiest way for a lacquer coating to be applied is by spraying, but it can also be brushed or wiped on with a rag. Lacquer can be used over lacquer-base, non-grain-raising (NGR), and water stains, and over lacquer-base fillers. Oct-10-2013, 7:59am. High-volume, low-pressure (HVLP) spray equipment proves best for application because it greatly reduces bounce-back and overspray compared with conventional high-pressure spray guns. Lacquer can be used on most woods, but it cannot be used on mahogany and rosewood; the oils in these woods will bleed through the finish. You might ask to see samples. Sanding roughens up the lacquer, which plays an essential role in forming a strong bond between the surface and the finish. Years ago in school we oiled cedar chests to bring out the grain then we used lacquer over it. Don't over-do the shellac when you're top coating with lacquer; you want to keep the shellac thin. Note: If you choose to stain prior to applying Minwax® Lacquer Sanding Sealer, be careful not to sand the sealer so aggressively that you go through to the stain and damage the color. Add several more thin coats of lacquer. Hmm. Over Mineral Oil Waterlox products can be applied over mineral oil as long as it is very dry. Under water base, it needs to be absolutely dry, or barrier coated with dewaxed shellac, before applying the finish. Note: brushing lacquer sprays on perfectly well! This can be with a spray system. Lacquer can discolor over a … It is a simple wipe-on, wipe-off process. Several coats, thinly applied. Can lacquer be applied over oil based finish Post by Millu » Wed Nov 02, 2011 5:49 pm I want to apply a more protective top coat over an existing finish on wooden boards finished in a green colour that I'm not 100% positive how they're finished. Because lacquer is typically applied in thin coats, you can often touch up the finish without having to sand and reapply an entirely new coat. Or with aerosol cans. This makes lacquer ideal for modern pieces of furniture. I would think anything you can use over oil based stain would work for sure. I have a 50 year old chest that still looks like new. The new lacquer dried even faster, and it could be applied using spray guns. I recently completed construction on a project. Even if it has varnish on it, its so old, hard and dry you can get away with putting lacquer over it as long as you don't flood a wet coat on it. Lacquer can be over-coated with other lacquer, paints, or enamels and acrylics. When you spray lacquer over a solvent-based acrylic finish, they combine to form a hybrid film, even if the acrylic is pigmented to form a paint. First post on this sub- because the talent here can be a bit intimidating. It is also very durable and is used to protect the wood from the elements. Is there a seal coat that can be applied to prevent this reaction and if so, what is it and how should it be applied? However lacquer may not be the best bet here for a couple of reasons. Wood is a substance that moves and changes with climate, treatment and age, as do the finish coatings that are applied to it. In Italy, apprentices applied up to 15 coats of varnish to create a lacquer finish. However, it can change color over time and will eventually scratch with continued wear and tear. Then the shellac goes on top of the gel stain as a top layer finish. This is because the most popular types of topcoats, varnish, lacquer, polyurethane, and shellac have advantages and disadvantages which makes them best suited for particular types of settings. Bill Snyder. Brushing lacquer is available also. There are risks to spraying any type of solvent lacquer over any existing, and older, paint or finish. Once it's dry, I've successfully overcoated it with oil varnish, shellac, lacquer, and water based finishes. Generally, lacquer is a poor finish when compared with many other finishes. Mineral Oil. Applying lacquer does not have to be as daunting of a task as some make it out to be. But, spray lacquer dries too fast to be brushed on. 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