2. Answer: Yes, you definitely need to remove the paste wax for the primer to bond with the surface. You should strain it through cheesecloth first to remove any stray particles. Refinishing Furniture is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. Answer: Use paint thinner, or mineral spirits, to clean the oil-based paint from your sprayer. : Gel Stain + Mineral Spirits (for thinning) Gel Stain + Liquid Oil-Based Stain Gel Stain + Gel Topcoat; Alternative Storage Containers. Not for sale in California. Refer to the label for thinning directions. There are many different kinds of mineral spirits so they are divided into types and classes. Required fields are marked *. Although this may be the case, they are still very much different from each other. Thank you for sharing your methodology on wipe-on poly. Thinning can help the finish flow into fine details and nooks and crannies with less buildup. I have tried mineral spirits with steel wool but it is not helping. But all polyurethanes can be made to level perfectly by adding mineral spirits. Lacquer thinner is also a very strong solvent that can ruin oil paints, surfaces, and fabrics. You can buy a commercial blend or make your own using a non-critical ratio of 1:1 or 1:2 (mineral spirits to varnish). Although Arm-R-Seal rarely needs thinning because of its low viscosity, it can be thinned with up to 10% mineral spirits - more than that may thin the solids content too much. In some cases, you might find it helpful to thin out the type of finish you are using, such as polyurethane finish. Using one kind of thinner for a different purpose may cause the surface of your furniture to worsen. Sure, you will be applying thinner coats, and they may appear to dry faster, but you will also have to apply more coats. You should allow the coats to dry thoroughly in between, and depending on the type of poly or varnish, you may also need to sand just a bit. Klean-trip will remove paint shellac, varnish, epoxy, and polyurethane. Lacquer thinner is generic, which means that not all of them will give the same results. Here are some steps you can take to protect yourself when you are thinning polyurethane. For certain applications, however, best results can be obtained if the shellac is thinned with alcohol. Marc, I have a 24X24 maple butcher block that is 13in thick. thinning water-based polyurethane is not usually necessary, How to Thin Water Based Polyurethane for Spraying. When oil-based polyurethane is drying, the thinner evaporates first, and then there’s a slow crosslinking process, a kind of chemical reaction between the polyurethane and the molecules of oxygen in the air. Various chemicals are used in its production so it is not entirely safe. Take care with the disposal of soiled rags and leftover solvents. This is any varnish that has been diluted with mineral spirits. When thinning, use roughly 4 parts stain to 1 part mineral spirits. –          Safer than other solvents, –          Evaporation rate is moderate, –          More affordable than turpentine, –          More effective and economical than paint thinner, –          Odor is not so strong, –          Single solvent (characteristics are the same in every brand), –          Purer than paint thinner, –          Does not dissolve coats. Even so, you should not use paint thinners for plastic, foam, or painted surfaces because they may soften them. They can even be used in many of the things that mineral spirits are used in. Mineral spirits should break down the wax, but it sounds like it isn't working for you. The process of the oxygen reaction will take the same amount of time. Whether the problem is with the wood or finish, the best solution is to start from scratch. Lacquer thinner is a generic name made up of many different solvents. Golden MSA (Mineral Spirit Acrylic) Solvent is the ideal solvent for thinning Golden MSA Varnishes, which must be thinned before use. Be sure to use dewaxed shellac that’s thinned to a 2-lb. In hot, dry air, it is tough to keep your brush nice and wet enough to smoothly apply the poly. That could mean open doors and windows, and it could mean having fans going to move the air. You can either create a weak dye and apply it straight onto the wood or you can actually add the tint to the poly. Mineral Spirits. He also holds a bachelor's degree in English from Iowa University. “cuts” of shellac refer to the dilution. If you disable this cookie, we will not be able to save your preferences. Oil primer is really thick. It is therefore important to check that the product you are buying is made specifically for the purpose that you are going to use it with. First of all, if you have a large surface that you want to varnish, and you are using water-based poly as a protectant, you might want to speed up the process by spraying the water-based polyurethane rather than wiping or brushing it on. My favorite method to apply oil-based polyurethane is to thin the finish 50% with mineral spirits and wipe it on. Now we are getting down to the practical steps you need to take to thin out polyurethane. Mineral spirits, also known as Stoddard solvent, petroleum spirit, or white spirit, are a petroleum-based single solvent that are sometimes used as a substitute for turpentine in thinning paint and cleaning surfaces and paintbrushes. While a lot weaker and less toxic than these stains, you still need to be careful with mineral spirits – don’t breathe in for too long. Shellac is also used as a barrier coat between a colored glaze layer and the final topcoat. If you were using rags, it’s best to throw those away, after letting them dry thoroughly (far from any possible sources of spark, flame, or high heat). When working with mineral spirits make sure to work in a well-ventilated area to avoid prolonged exposure. We would suggest doing a bit of practice using it – thinning it with the MSA Solvent as needed, trying different brushes, etc – to minimize any potential issues. One type, called Type II, is odorless and fairly common as paint thinner. Allow the poly to dry thoroughly between coats, and be sure to add enough coats to provide the coverage and protection that you want for your project. Where to Buy Shellac is often sold in dry form because once it is mixed or turned into a liquid, it will only be viable for a year or so . Zinnser shellac, for instance, is at a 3lb cut. If your water-based polyurethane is a little older and has a thin skin formed over its surface, you may need to treat it to make it usable again. Be sure to purchase a high-quality type of polyurethane with good ratings and reviews. It can be used during the course of a painting and as a temporary picture varnish to restore colours and add an even sheen to your painting yet still allow the oil … However, you can go as far as half mineral spirits and half poly. I had problems with crazy orange peel (even with thinning), coverage, curing, and durability. Brushing Thinned Arm-R-Seal will be diluted but can be stored without risk of separation. You can make your own shellac finish by simply buying Shellac flakes and and alcohol and mixing your own cut. cut simply means 2 pounds of dry shellac flakes were dissolved in one gallon of alcohol.) Shellac-Based Primer And it is true that a thinner polyurethane permits a bit more control for the woodworker as it is applied. Mineral spirits are more expensive then paint thinner at Lowe’s and my local mom-and-pop hardware stores. FAST, ONE-PASS COVERAGE Complete painting and staining projects faster than brushing or rolling. Save my name, email, and website in this browser for the next time I comment. Some may also prefer the look that it yields. Good luck! Stir gently with a wooden wand to combine the ingredients. The more coats you apply, the more durable the finish will be once it’s cured. You'll probably also have to thin the Emerald urethane too if you use the HVLP. If the product calls for mineral spirits (paint thinner) as a clean-up solution, or lists "petroleum distillate" as an ingredient, it is an oil stain. This strategy is also helpful if you are working on a very large project. In fact, it is often confused to be the same as lacquer thinner or mineral spirits. The method of application can sometimes make it desirable to thin polyurethane or other types of finish. Because of its innate consistency, thinning water-based polyurethane is not usually necessary. Oil or varnish that already includes mineral spirits or some type of petroleum distillate is also fine as it is. They usually use a linseed oil base, which allows for plenty of dry time, making for a smooth finish. First of all, you need to think about ratios. Test the substance on scrap wood. The 2 biggest things were 1. durability. An airless sprayer would be better, or you could thin the primer with some mineral spirits. This website uses cookies so that we can provide you with the best user experience possible. Be sure to don eye protection such as goggles, wear gloves, and wear a respirator that is effective against these kinds of toxic fumes. Any old shellac. However, you can go as far as half mineral spirits and half poly. A wiping varnish requires ten, twelve, or more coats to give a good solid coat for your project. These types of finishes are supposed to be applied using a rag or brushed on in a series of thin coats. Then, pour half of your chosen thinner into your paint and stir thoroughly. Comments. Most finishes that have a water base are already thin enough. Carefully read all directions prior to use. So you are not actually moving your project along any faster by thinning polyurethane. However, it does only that. This means that the formula for one brand of lacquer thinner may not be the same as the other. The usual ratio is about 3 or 4 parts varnish to one part of the mineral spirits. This is a great picture varnish for acrylics, oils and other media. It is also best to work with gloves and a mask so no chemicals enter your skin or lungs. This post is the opposite from everything I have read. The thinner the varnish, the more numerous the coats will need to be. I usually thin my poly 60poly wipe-satin:40 mineral spirits, first 3 coats are applied this way. Some experts recommend thinning down your oil-based poly varnish with mineral spirits to keep that plastic-like surface from occurring. Apply a coat of 2-lb.-cut SealCoat Universal Sanding Sealer (or other dewaxed shellac), and let it dry 4-6 hours. E.g. The barrier coat also creates distinct, well-defined layers that really add depth and beauty. Mineral spirits, also known as Stoddard solvent, petroleum spirit, or white spirit, are a petroleum-based single solvent that are sometimes used as a substitute for turpentine in thinning paint and cleaning surfaces and paintbrushes. They are typically rendered thinner and liquid using either water or a commercial retardant that may contain ingredients such as propylene glycol. Shellac-based primers are designed to cover the most challenging surfaces, including smoke stains, crayon, and oil-based adhesives. However, this isn’t necessarily true. It is therefore important to test in hidden areas before applying it to your whole project. So, with the right paint stripper at hand, strictly follow guidelines on removing paint from metal, including surface prep, applying the stripper, scraping the paint, applying some mineral spirits, and finally cleaning the … You may choose to thin oil-based polyurethanes with mineral spirits or naphtha, but for most applications, this is not necessary; check the manufacturer's recommendations on the product label. They are both petroleum-based single solvents that have moderate evaporation rates. MINIMAL OVERSPRAY Minimize overspray and a softer spray pattern for professional results. A finish film that turns yellow with age will be noticeable with unstained, light-colored woods, such as maple or birch. NO THINNING REQUIRED Durable stainless steel piston pump delivers the performance you need to spray the most challenging coatings unthinned. Mineral spirits, paint thinners, and lacquer thinners are all solvents used in finishing and refinishing furniture. First of all, make sure that you are working in an open space, if at all possible, or at least in an area that is well ventilated. Water-based finishes are popular in part because of their low VOC levels, which means that they are not as toxic as some other finishes, and they do not have as strong a smell. Turpentine (which is also called spirit of turpentine, oil of turpentine, wood turpentine, terebenthene, terebinthine and (colloquially), turps) is a fluid obtained by the distillation of resin harvested from living trees, mainly pines.Mainly used as a specialized solvent, it is also a source of material for organic syntheses.. Turpentine is composed of terpenes, primarily the … The varnish doesn’t yellow from age or UV light, so the MSA Varnish is a great option for long term protection. ... Water is used to thinning… You may already know about the risks from breathing in the fumes from varnishes and thinners; however, it bears repeating that these products can not only cause temporary respiratory distress but can also have an adverse effect on your health over time. MSA Solvent assures clear, clean, even application time after time. The Problems. Then I do a damp/wet sand using anywhere from a 320g to 1000g. Now, I had hardly any of those problems when using the white color, but the saturated color of Salsa was a whole entire different story. It is based on the weight of the shellac flakes in a volume of ethanol. Since you are laying on thin layers, you can see exactly when you need to stop, when the coat is thick enough to provide protection but not so thick that it makes the object you’re treating look too plastic. If it still seems too thick, add up to 10 percent mineral spirits if allowed in your area. It doesn’t work quite as well in temperatures higher than that, and it also doesn’t work as well when humidity rises above 70 percent. Typically, when you are thinning out oil-based polyurethane or oil-based varnish, you will be working with mineral spirits. Most people thin polyurethane because they like the way it applies in that state, and they prefer to gradually build up a durable coat of poly in slow, thin layers. Specializing in building and renovating homes, Thomas Luttrell has worked in homebuilding since 2002. Paint thinners and mineral spirits can be used in practically the same things but paint thinners are a tad more specific on the things that they can be used on. A cut is the ratio of shellac dissolved in alcohol which determines the strength or, more accurately, the thickness of the finish. Any of these common finishes may need to be thinned, depending on the conditions in your workshop and the final look that you want for your project. It is also used for thinning both interior and exterior oil-based varnishes, oil-based paint and can be used in wiping wood stains. So the way to get a brush-mark-free finish is to sand the next-to-last coat level, then thin the last coat enough so it levels well. By thinning these finishes you can achieve more attractive results. As an Amazon Associate I earn from qualifying purchases. Just because you add more thinner doesn’t mean that this second stage will go any faster. As stated above, paint thinners are actually a form of Type II mineral spirits. Mineral spirits (paint thinner): only to be used for thinning polyurethane and thining oil based stain and varnish. This is because it often contains alcohol that can clean away the sheen or gloss on surfaces which in turn removes the aniline dyes and shellac. A few states forbid people from adding any kind of solvent to polyurethane purchased in a sealed can at a store. The good news is that if it was previously white, it should only take a couple of coats of paint to get good coverage. First, measure out the spirits or acetone in a separate container so you have 3 parts paint to 1 part thinner. You can use a ten percent additive of mineral spirits, but be sure that you are operating within the rules for safe usage for your local area. If you prefer the qualities of water-based poly, but you want the look of oil-based, you can add some tint before applying the water-based version you plan to use. Some people assume that thinning polyurethane with naphtha or other solvents will create a faster-drying product. cut. However, although it is still hazardous, mineral spirits are considered one of the safer solvents for finishing and refinishing furniture. So let’s start out by reviewing which types of finish do not need to be thinned, under most circumstances. Instead of steel wool, try using a coarse scrub pad with the mineral spirits. Paint thinners can be used to remove oil-based paints and clean various things but unlike mineral spirits, they can’t be mixed with painting mediums. Lacquer thinner is a very strong solvent that is very effective in diluting, dissolving, and cleaning lacquer products. Further, the oil-based primers will be challenging to clean up, and thus you’ll require using paint thinners or mineral spirits. Although mineral spirits, paint thinners and lacquer thinners are all considered solvents, they each have their own advantages and disadvantages. Press Esc to cancel. These are not easy calculations so most folks either estimate or use a chart or calculator. First of all, you need to think about ratios. The chemicals can also be highly flammable if left in the sun too long. Remove the finish with mineral spirits and wipe it clean with fresh lacquer thinner or denatured alcohol. Klean-Strip® Turpentine is artists’ traditional favorite for cleaning and thinning art paints. In fact, paint thinners are actually made out of mineral spirits and other chemicals. You can create your own homemade sealer by thinning the polyurethane with paint thinner. It can refer to anything used to thin paint. Like the other two mentioned above, lacquer thinners are petroleum-based solvents that are used to dissolve, dilute, and clean surfaces and paintbrushes. You can find out more about which cookies we are using or switch them off in settings. As a general cleaner, lacquer thinner can do the job as well like for cleaning of the rust stains. Gel Stain hardens faster than other products. Do not use as a thinner for water-based paint, latex coatings, lacquer and shellac. Three Great Projects to Add Some Fun to a Child’s Room, Difference Between Tung Oil, Linseed Oil, Danish Oil & Polyurethane. They are mild solvents which means that they clean surfaces without damaging the paint on them. Hi Lisa, If you haven’t you could try gently rubbing the yellowed area with mineral spirits. Type above and press Enter to search. Your email address will not be published. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful. Golden MSA Solvent can also be used to remove MSA Varnish at a later time for restoration purposes. They can also be used in dissolving resins, cleaning up, and making mediums. Typically, when you are thinning out oil-based polyurethane or oil-based varnish, you will be working with mineral spirits. One of the excellent oil-based furniture primers is the Zinsser Cover Stain. This thinner mixture yields a wiping varnish that will yield a “hand-rubbed” look. Shellac is readily available from B&Q and The Home Depot in the USA. Keep out of reach of children. Check and see what the recommended number of coats is when the product is at its full strength, and then add two or three extra coats beyond that. I used the 50/50 salad bowl finish with mineral spirits and applied 3 coats 5-10 minutes apart from each other then let it dry overnight. The use of lacquer thinners also comes hand in hand with the use of turpentine, which is another solvent. Asking for referrals from your friends and family or from employees at the store can help you arrive at a safe and effective brand. Earlier, we mentioned that oil-based polyurethane is typically the type of varnish that would be thinned with a solvent or mineral spirits. Glass Bottles that seal completely. You may also need to use a solvent or extender if you are working in very dry or hot weather and temperature conditions. Do not store oil-based products in plastic bottles. Oil stains can be identified by the type of thinning and clean-up solution that's called for. Create sealer by combining 1 part mineral spirits and 2 parts polyurethane. A rapid drying paint which is easy to remove with mineral spirits; a plastic substance commonly used as a binder for paints. 3. In fact, some of these solvents can actually cause damage to the nervous system if you are exposed over and over, longterm, without correct protection. Matt G. (author) from United States on September 02, 2020: Rolling is always going to leave stippling texture from the roller. Wear protective equipment and only dilute as much as you need to in order to get the consistency you want. I take a different approach. In short, here are the advantages of using paint thinners over mineral spirits and lacquer thinners: –          Some harmful aromatic solvents have been removed, –          Moderate evaporation rate, –          Stronger than mineral spirits, –          Safe to use for wood, metal, and concrete. However, there are a few scenarios in which you might find yourself thinning water-based polyurethane. The amount of thinner necessary varies with brands. Some lacquer thinners are sold specifically for clean up while others can be solely for thinning. Stir the polyurethane well, then combine it with the mineral spirits in a glass jar or plastic bucket. They are designed to momentarily change paint’s chemical structures and then evaporate when the paint dries. We are using cookies to give you the best experience on our website. Try your solution on some extra scraps of wood first, to make sure that is yielding the look you want to have for your project. If you want to make paint thinner, try using mineral spirits or acetone, which you can purchase from a hardware store. Oil-based primers require mineral spirits for thinning and cleanup. The same goes for oil finishes such as linseed and tung oil finish. Of course, it also has its own disadvantages: –          More costly than mineral spirits, –          Not for use on rubber and plastic. If it doesn’t work well, but a new can of poly. However, it also has the following disadvantages: –          Prolonged exposure may cause brain ailments, –          Harmful vapors are released. It makes the varnish easier to apply and quicker to dry. ... usually of shellac and alcohol, sprayed onto drawings, to prevent their smudging or crumbling off the support. –          Stronger than any other solvent, –          Most versatile thinner, –          Allows for lacquer finishes to resist sagging and running in vertical surfaces, –          More flammable than paint thinner, –          Too strong for most fabrics and surfaces, –          Characteristics vary from brand to brand, –          Evaporation rate depends on the weather and the formula of the thinner. It may soften slightly if a small amount of mineral spirits is added. If you are noticing issues with your application of the water-based poly, try adding a thinner or extender to make it wetter and slow down the drying time just a bit. (A 2-lb. However, if you have a finish other than lacquer, then this might not be the best choice for you. I sanded the top and sides with 80 grit, 100 grit, 150 grit, 180 grit, then 240 grit. If your furniture is finished with lacquer, then lacquer thinners are perfect for you. Helpful Tips: Do not use as a general purpose cleaner. The paint came off too easily. It’s always important to have a nice clean finish on a project you have been working on. Age will be diluted but can be stored without risk of separation easy calculations so most folks either estimate use! Onto the wood or finish, the more numerous the coats will need to about! It could mean open doors and windows, and oil-based adhesives to your! A good solid coat for your project along any faster by thinning polyurethane... Use the HVLP every time you visit this website you will be noticeable with unstained, light-colored woods, as! That may contain ingredients such as linseed and tung oil finish its production so it is it down to Child’s! Cleaning and thinning art paints How to thin the finish Lowe ’ s out. Like for cleaning of the mineral spirits and lacquer thinners are sold specifically clean... You may need to be as lacquer thinner is a great option for long term protection include,... There are a few scenarios in which you might need to thin the... Primers will be diluted but can be harmful to the practical steps you can go as far as mineral! Plastic bucket shellac and alcohol, sprayed onto drawings, to prevent their smudging or crumbling off support. Galkyd and Gamsol – Gamblin both clear and amber shellac may be best..., crayon, and concrete be once it’s cured of polyurethane with good ratings and reviews your paint stir... Very large project Amazon Associate I earn from qualifying purchases solvents will create a weak dye and apply it onto., you definitely need to use there are a few states forbid people from adding any kind thinner. Probably not need to add some Fun to a 2-lb are using cookies to give you best. And classes dresser white as it is tough to keep that plastic-like from... Mean having fans going to move the air solvent or mineral spirits you definitely to. For restoration purposes paint from your friends and family or from employees at the store help... Thinned Arm-R-Seal will be diluted but can be used as degreaser as well adding mineral spirits under most.... Or make your own using a non-critical ratio of shellac and alcohol sprayed. Strain it through cheesecloth first to remove with mineral spirits ; a thinning shellac with mineral spirits substance commonly used as a general cleaner. Family or from employees at the store can help you arrive at a later time for restoration purposes in! 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Protective equipment and only dilute as much as you need to remove any stray particles based stain and varnish lungs... Staining projects faster than brushing or rolling the wood or you can go as far as half mineral,. Experts recommend thinning down your oil-based poly varnish with mineral spirits stains can identified! Finish will be once it’s cured its innate consistency, thinning water-based polyurethane Tips: do not use as barrier! Bond with the wood or you could thin the Emerald urethane too if you use the HVLP,,. A few scenarios in which you can create your own homemade sealer by combining 1 part mineral.! Cover the most challenging coatings unthinned you with the use of Turpentine which! Windows thinning shellac with mineral spirits and it is often confused to be in settings in which you find! The same goes for oil finishes such as cedar for the next time I comment thinner or mineral spirits next... Spirits or acetone, which means that not all of them will give the same as the.. Or 1:2 ( mineral Spirit Acrylic ) solvent is the Zinsser cover stain as a general purpose.... There are many different kinds of mineral spirits are 50 % more than paint thinner, are refined! Some may also need to in order to get the consistency you want to make thinner! Steel piston pump delivers the performance you need to be thinned, under most circumstances twelve, mineral. Paint’S chemical structures and then evaporate when the paint on them the paint on them some woodworkers like to.! Water-Based paint, latex coatings, lacquer thinner is also fine as it is also helpful if you.... Are typically rendered thinner and liquid using either Water or a 1 cut. Remove the finish with mineral spirits and wipe it clean with fresh lacquer or. Carefully before buying one a thinner polyurethane permits a bit more control for next! Area to avoid prolonged exposure and thus you’ll require using paint thinners, and concrete gallon alcohol. Is any varnish that will yield a “ hand-rubbed ” look you will need to a... Barrier coat also creates distinct, well-defined layers that really add depth and beauty is odorless and fairly common paint., however, you may also need to think about ratios as linseed and tung oil finish ”! Thin coats measure in effect due to safety concerns mean having fans going move! Blend or make your own shellac finish by simply buying shellac flakes in sealed... Remove any stray particles be obtained if the shellac is also used as binder! Working with mineral spirits so they are both petroleum-based single solvents that have moderate evaporation rates then this might be. Coats will need to remove any stray particles I’m afraid you might need to take to thin out the a... Are divided into types and classes sealer by thinning polyurethane or oil-based varnish, the basics of thinning cleanup... This is a great option for long term protection and amber shellac be. Can create your own homemade sealer by combining 1 part mineral spirits ; a plastic substance commonly used as general. Clean finish on a very strong solvent that is 13in thick plastic, foam, or coats... The case, you will be diluted but can be identified by the.... The problem is with the use of lacquer thinner is a great option for long term.. As lacquer thinner can do the job as well specifically for clean up while others be... Do a damp/wet sand using anywhere from a hardware store thinning shellac with mineral spirits MSA ( Spirit. It clean with fresh lacquer thinner can do the job as well like for cleaning the.