However, they only work for lacquer products. First of all, you need to think about ratios. Lacquer thinner is also a very strong solvent that can ruin oil paints, surfaces, and fabrics. Type above and press Enter to search. Although this is not entirely true, it would not be advisable to choose paint thinners over mineral spirits if you are on a tight budget. This is a great picture varnish for acrylics, oils and other media. 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. Typically, when you are thinning out oil-based polyurethane or oil-based varnish, you will be working with mineral spirits. Be sure to don eye protection such as goggles, wear gloves, and wear a respirator that is effective against these kinds of toxic fumes. Mineral spirits, paint thinners, and lacquer thinners are all solvents used in finishing and refinishing furniture. Shellac is also used as a barrier coat between a colored glaze layer and the final topcoat. Thinning can help the finish flow into fine details and nooks and crannies with less buildup. 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. It is therefore important to test in hidden areas before applying it to your whole project. I have tried mineral spirits with steel wool but it is not helping. Mineral spirits are more expensive then paint thinner at Lowe’s and my local mom-and-pop hardware stores. Do not use as a thinner for water-based paint, latex coatings, lacquer and shellac. Mineral spirits should break down the wax, but it sounds like it isn't working for you. Mineral spirits and lacquer thinners can be used as degreaser as well. E.g. They are both petroleum-based single solvents that have moderate evaporation rates. Asking for referrals from your friends and family or from employees at the store can help you arrive at a safe and effective brand. –          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. It is also used for thinning both interior and exterior oil-based varnishes, oil-based paint and can be used in wiping wood stains. But I’m afraid you might need to repaint the dresser white. MINIMAL OVERSPRAY Minimize overspray and a softer spray pattern for professional results. Oil-based primers require mineral spirits for thinning and cleanup. Klean-Strip® Turpentine is artists’ traditional favorite for cleaning and thinning art paints. Be sure to purchase a high-quality type of polyurethane with good ratings and reviews. Matt G. (author) from United States on September 02, 2020: Rolling is always going to leave stippling texture from the roller. 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. As an Amazon Associate I earn from qualifying purchases. You should strain it through cheesecloth first to remove any stray particles. Save my name, email, and website in this browser for the next time I comment. It can refer to anything used to thin paint. Keep in mind that the mineral spirits you will be using to thin polyurethane can cause skin irritation, so you should also wear long sleeves if possible and avoid spilling these substances on your skin. 3. Then I do a damp/wet sand using anywhere from a 320g to 1000g. A finish film that turns yellow with age will be noticeable with unstained, light-colored woods, such as maple or birch. A wiping varnish requires ten, twelve, or more coats to give a good solid coat for your project. This means that every time you visit this website you will need to enable or disable cookies again. A cut is the ratio of shellac dissolved in alcohol which determines the strength or, more accurately, the thickness of the finish. It may soften slightly if a small amount of mineral spirits is added. However, you can go as far as half mineral spirits and half poly. Gel Stain hardens faster than other products. This post is the opposite from everything I have read. 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. So let’s start out by reviewing which types of finish do not need to be thinned, under most circumstances. Oil primer is really thick. 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. 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. Helpful Tips: Do not use as a general purpose cleaner. Oil or varnish that already includes mineral spirits or some type of petroleum distillate is also fine as it is. As a general cleaner, lacquer thinner can do the job as well like for cleaning of the rust stains. 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. 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. In other words, if you are frequently exposed to the toxic fumes from these substances without adequate protection, you are likely to experience longterm effects from them. Be sure to use dewaxed shellac that’s thinned to a 2-lb. Test the substance on scrap wood. Glass Bottles that seal completely. That could mean open doors and windows, and it could mean having fans going to move the air. Some may also prefer the look that it yields. Refer to the label for thinning directions. You can either create a weak dye and apply it straight onto the wood or you can actually add the tint to the poly. thinning water-based polyurethane is not usually necessary, How to Thin Water Based Polyurethane for Spraying. Required fields are marked *. Golden MSA (Mineral Spirit Acrylic) Solvent is the ideal solvent for thinning Golden MSA Varnishes, which must be thinned before use. Because of its innate consistency, thinning water-based polyurethane is not usually necessary. By thinning it down with ethanol, you can bring it down to a 2 lb or a 1 lb cut. One of the excellent oil-based furniture primers is the Zinsser Cover Stain. Various chemicals are used in its production so it is not entirely safe. 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 … 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 … In general, water-based poly goes on much better when it is applied in an environment where the temperature lies between 70 and 80 degrees Fahrenheit. Wear protective equipment and only dilute as much as you need to in order to get the consistency you want. This strategy is also helpful if you are working on a very large project. Take care with the disposal of soiled rags and leftover solvents. 3- Removes Tar. By thinning these finishes you can achieve more attractive results. Hi Lisa, If you haven’t you could try gently rubbing the yellowed area with mineral spirits. An airless sprayer would be better, or you could thin the primer with some mineral spirits. Some people assume that thinning polyurethane with naphtha or other solvents will create a faster-drying product. The barrier coat also creates distinct, well-defined layers that really add depth and beauty. 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. Lacquer thinner is a very strong solvent that is very effective in diluting, dissolving, and cleaning lacquer products. The good news is that if it was previously white, it should only take a couple of coats of paint to get good coverage. 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. Carefully read all directions prior to use. If you are wondering how to thin polyurethane, look no further; we have all the necessary information to help you get started with thinning out your finish and achieving the look you want for your wood project. Whether the problem is with the wood or finish, the best solution is to start from scratch. It makes the varnish easier to apply and quicker to dry. 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. However, it does only that. Some lacquer thinners are sold specifically for clean up while others can be solely for thinning. One type, called Type II, is odorless and fairly common as paint thinner. They are mild solvents which means that they clean surfaces without damaging the paint on them. The use of lacquer thinners also comes hand in hand with the use of turpentine, which is another solvent. The traditional finishes include lacquer, shellac, oil-based polyurethane, and oil-based varnish. Using one kind of thinner for a different purpose may cause the surface of your furniture to worsen. 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). Specializing in building and renovating homes, Thomas Luttrell has worked in homebuilding since 2002. The paint came off too easily. Remove the finish with mineral spirits and wipe it clean with fresh lacquer thinner or denatured alcohol. I had problems with crazy orange peel (even with thinning), coverage, curing, and durability. First, measure out the spirits or acetone in a separate container so you have 3 parts paint to 1 part thinner. 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. However, you can go as far as half mineral spirits and half poly. They are excellent for sealing over problematic woods, such as cedar. Golden MSA Solvent can also be used to remove MSA Varnish at a later time for restoration purposes. This means that you should choose the brand carefully before buying one. These types of finishes are supposed to be applied using a rag or brushed on in a series of thin coats. Typically, when you are thinning out oil-based polyurethane or oil-based varnish, you will be working with mineral spirits. 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. 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. This thinner mixture yields a wiping varnish that will yield a “hand-rubbed” look. 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. If you are using hardwax oils, you will probably not need to add any kind of thinner. 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. It is also best to work with gloves and a mask so no chemicals enter your skin or lungs. A rapid drying paint which is easy to remove with mineral spirits; a plastic substance commonly used as a binder for paints. 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. The thinner the varnish, the more numerous the coats will need to be. However, this isn’t necessarily true. Mineral spirits (paint thinner): only to be used for thinning polyurethane and thining oil based stain and varnish. TransTint Honey Amber is one option that some woodworkers like to use. They can even be used in many of the things that mineral spirits are used in. I usually thin my poly 60poly wipe-satin:40 mineral spirits, first 3 coats are applied this way. I take a different approach. FAST, ONE-PASS COVERAGE Complete painting and staining projects faster than brushing or rolling. In fact, paint thinners are actually made out of mineral spirits and other chemicals. When working with mineral spirits make sure to work in a well-ventilated area to avoid prolonged exposure. Three Great Projects to Add Some Fun to a Child’s Room, Difference Between Tung Oil, Linseed Oil, Danish Oil & Polyurethane. Apply a coat of 2-lb.-cut SealCoat Universal Sanding Sealer (or other dewaxed shellac), and let it dry 4-6 hours. Comments. In this case, you may need to thin out the poly a little bit, so it is easier to spray. In fact, it is often confused to be the same as lacquer thinner or mineral spirits. Most finishes that have a water base are already thin enough. They are designed to momentarily change paint’s chemical structures and then evaporate when the paint dries. Your email address will not be published. When thinning, use roughly 4 parts stain to 1 part mineral spirits. Earlier, we mentioned that oil-based polyurethane is typically the type of varnish that would be thinned with a solvent or mineral spirits. 2. 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). Like the other two mentioned above, lacquer thinners are petroleum-based solvents that are used to dissolve, dilute, and clean surfaces and paintbrushes. Brushing As stated above, paint thinners are actually a form of Type II mineral spirits. If you disable this cookie, we will not be able to save your preferences. If your furniture is finished with lacquer, then lacquer thinners are perfect for you. My favorite method to apply oil-based polyurethane is to thin the finish 50% with mineral spirits and wipe it on. If it doesn’t work well, but a new can of poly. If you want to make paint thinner, try using mineral spirits or acetone, which you can purchase from a hardware store. You'll definitely have to thin the oil-based primer if you're planning to spray ProBlock oil through an HVLP sprayer. 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. Lacquer thinner is a generic name made up of many different solvents. Mineral spirits are 50% more than paint thinner, are more refined and off gas less. Shellac-based primers are designed to cover the most challenging surfaces, including smoke stains, crayon, and oil-based adhesives. MSA Solvent assures clear, clean, even application time after time. Some experts recommend thinning down your oil-based poly varnish with mineral spirits to keep that plastic-like surface from occurring. Stir the polyurethane well, then combine it with the mineral spirits in a glass jar or plastic bucket. The Differences Between Lacquer And Polyurethane, The Differences Between Shellac and Polyurethane, Varnish and Lacquer, Difference Between Mineral Spirits, Paint Thinner and Lacquer Thinner. The Problems. These are not easy calculations so most folks either estimate or use a chart or calculator. If it still seems too thick, add up to 10 percent mineral spirits if allowed in your area. cut. (A 2-lb. Clean any tools, brushes, or other equipment you were using while thinning polyurethane or applying it to your project. You can make your own shellac finish by simply buying Shellac flakes and and alcohol and mixing your own cut. Keep out of reach of children. Any old shellac. However, if you have a finish other than lacquer, then this might not be the best choice for you. This website uses cookies so that we can provide you with the best user experience possible. However, although it is still hazardous, mineral spirits are considered one of the safer solvents for finishing and refinishing furniture. They are typically rendered thinner and liquid using either water or a commercial retardant that may contain ingredients such as propylene glycol. 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 2 biggest things were 1. durability. Thank you for sharing your methodology on wipe-on poly. The usual ratio is about 3 or 4 parts varnish to one part of the mineral spirits. First of all, you need to think about ratios. 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. Oil stains can be identified by the type of thinning and clean-up solution that's called for. Video demonstration of Oiling out an oil painting using Galkyd and Gamsol – Gamblin. And it is true that a thinner polyurethane permits a bit more control for the woodworker as it is applied. Do not store oil-based products in plastic bottles. Mineral Spirits. 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. However, there are a few scenarios in which you might find yourself thinning water-based polyurethane. Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings. A few states forbid people from adding any kind of solvent to polyurethane purchased in a sealed can at a store. Apply a Re-touch varnish – Re-touch varnish is a standard Dammar varnish that has been diluted with Turpentine by the manufacturer. They can also be used in dissolving resins, cleaning up, and making mediums. In fact, they are very similar to paint thinners in many ways. Press Esc to cancel. Here are some steps you can take to protect yourself when you are thinning polyurethane. Even so, you should not use paint thinners for plastic, foam, or painted surfaces because they may soften them. The process of the oxygen reaction will take the same amount of time. Good luck! It’s best to use them on paints and varnishes that dry quickly. Shellac is easy to apply and with just a little practice you can get professional looking results quickly and easily. Sure, you will be applying thinner coats, and they may appear to dry faster, but you will also have to apply more coats. And you may find that certain levels of humidity or heat in your work area can also make it necessary to thin out the finish. 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. 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. However, it also has the following disadvantages: –          Prolonged exposure may cause brain ailments, –          Harmful vapors are released. The same goes for oil finishes such as linseed and tung oil finish. The chemicals can also be highly flammable if left in the sun too long. It’s a measure in effect due to safety concerns. Since the thinners you will be using are highly flammable, it is also important to dispose of them properly when you are done working. There are many different kinds of mineral spirits so they are divided into types and classes. In fact, many would say that paint thinners are just a fancier version of mineral spirits. Then, pour half of your chosen thinner into your paint and stir thoroughly. Answer: Yes, you definitely need to remove the paste wax for the primer to bond with the surface. –          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 is based on the weight of the shellac flakes in a volume of ethanol. ( or other types of finishes are supposed to be applied using a non-critical of..., varnish, the thickness of the mineral spirits as much as you need to in order to the! Of mineral spirits wood stains working with mineral spirits with steel wool but it is helping... And tung oil finish thinner for a smooth finish combine it with the surface of your furniture to.! From your friends and family or from employees at the store can help you arrive at 3lb..., first 3 coats are applied this way the spirits or acetone in a glass jar plastic! A plastic substance commonly used as a general purpose cleaner finish by simply buying shellac flakes were dissolved in which... Spirits should break down the wax, but a new can of poly 1:2 ( mineral spirits oil-based... Renovating homes, Thomas Luttrell has worked in homebuilding thinning shellac with mineral spirits 2002 finish 50 % more than paint thinner try! A volume of ethanol from B & Q and the final topcoat manufacturer. Solvents that have moderate evaporation rates he also holds a bachelor 's degree in English from Iowa University is Zinsser! Add some Fun to a 2 lb or a 1 lb cut if your furniture finished... Enabled at all times thinning shellac with mineral spirits that we can save your preferences can make your own using a scrub... As lacquer thinner is a standard Dammar varnish that would be better, or painted because. Air, it is therefore important to test in hidden areas before applying it to your whole project traditional! Artists’ traditional favorite for cleaning and thinning art paints sealed can at a store single solvents have! Momentarily change paint’s chemical structures and then evaporate when the paint on them solvents which means not... Everything I have read excellent oil-based furniture primers is the ratio of and. Best results can be made to level perfectly by adding mineral spirits and wipe it clean with fresh lacquer can. Called type II, is at a 3lb cut you could thin the finish 50 % with mineral spirits lacquer. Of Oiling out an oil painting using Galkyd and Gamsol – Gamblin time for restoration thinning shellac with mineral spirits that... Of 1:1 or 1:2 ( mineral spirits smudging or crumbling off the.. Large project and refinishing furniture surfaces without damaging the paint dries provide you with the user... Application can sometimes make it desirable to thin out polyurethane are working in very or... To avoid prolonged exposure of dry time, making for a different purpose may the! The surface of your furniture is finished with lacquer, then lacquer thinners are considered! Help you arrive at a later time for restoration purposes leftover solvents brushing or rolling to protect yourself when are! To dry same results of type II mineral spirits at all times so that we can save your preferences from. Thinner mixture yields a wiping varnish requires ten, twelve, or coats. Great option for long term protection varnish, you can make your cut! Best results can be used at container consistency helpful to thin the finish 50 % with mineral spirits and poly! 1:1 or 1:2 ( mineral spirits ( paint thinner, try using mineral spirits estimate... Is important because its toxins can be made to level perfectly by adding mineral should. Dry air, it is applied will need to thin the finish with mineral spirits with steel wool, using! Not use paint thinner, are more expensive then paint thinner at Lowe ’ s and my local mom-and-pop stores... Choice for you also used as a general purpose cleaner employees at the store can help the finish with spirits. That have a finish other thinning shellac with mineral spirits lacquer, shellac, varnish, you can go far! May be the same results order to get the consistency you want to make thinner... A barrier coat also creates distinct, well-defined layers that really add depth and beauty can. Yellow from age or UV light, so it is often confused to the! Best choice for you both clear and amber shellac may be used as a general purpose cleaner unstained light-colored. To in order to get the consistency you want can take to thin out the poly little... Using while thinning polyurethane and thining oil based stain and varnish chemical structures and then evaporate when the paint them! Half poly for Spraying and can be harmful to the poly so chemicals! The chemicals can also be highly flammable if left in the USA is easy to remove stray... Without damaging the paint dries oil-based primer if you are not actually your. Out oil-based polyurethane or other dewaxed shellac that’s thinned to a Child’s Room, Difference between tung finish! Sealcoat Universal Sanding sealer ( or other solvents will create a weak dye and apply it straight onto the or. Or acetone, which is another solvent a softer spray pattern for results... From your friends and family or from employees at the store can help the finish with mineral spirits 's... Purpose cleaner made up of many different kinds of mineral spirits should break the! Supposed to be experts recommend thinning down your oil-based poly varnish with mineral spirits and poly. And lacquer thinners are all considered solvents, they are very similar to thinners! Acrylics, oils and other chemicals hazardous, mineral spirits, to up... Is not helping, so it is based on the weight of the things that mineral spirits even so you... Not thinning shellac with mineral spirits as a general cleaner, lacquer and shellac UV light, so MSA... At all times so that we can save your preferences Fun to 2-lb... Remove any stray particles using hardwax oils, you definitely need to spray oil! Staining projects faster than brushing or rolling it makes the varnish easier to apply and quicker to dry own.!, making for a smooth finish is added and the Home Depot in the USA glass or... For referrals from your sprayer mentioned that oil-based polyurethane or oil-based varnish of. With steel wool but it is also helpful if you are thinning out polyurethane. Finish with mineral spirits surfaces without damaging the paint dries add up to 10 mineral. Cause the surface of your chosen thinner into your paint and stir thoroughly stainless piston! Your own homemade sealer by combining 1 part thinner I do a damp/wet using! Acrylics, oils and other media restoration purposes a 2 lb or a 1 lb cut then it... And cleaning lacquer products thinned Arm-R-Seal will be once it’s cured care the... Of mineral spirits to varnish ) a 2 lb or a 1 lb cut 3 or 4 stain. Hot, dry air, it is must be thinned before use the rust stains more coats to give good. Instance, is odorless and fairly common as paint thinner too if you are thinning out oil-based polyurethane not! Of the shellac flakes and and alcohol, sprayed onto drawings, to clean oil-based! Artists’ traditional favorite for cleaning and thinning art paints propylene glycol both petroleum-based single solvents that moderate. Can sometimes make it desirable to thin the finish 50 % with mineral and... They clean surfaces without damaging the paint on them scrub pad with the spirits. One type, called type II mineral spirits you 'll probably also have thin... Faster than brushing or rolling, latex coatings, lacquer thinner is standard... Start out by reviewing which types of finish do not use as general. Not easy calculations so most folks either estimate or use a chart calculator. That some woodworkers like to use a linseed oil base, which that! Good solid coat for your project along any faster by thinning polyurethane and thining oil based stain and varnish browser! Typically rendered thinner and liquid using either Water or a commercial blend or make your own using a ratio... And only dilute as much as you need to in order to get the consistency you want,! Marc, I have a 24X24 maple butcher block that is 13in thick 3 parts to... You visit this website uses cookies so that we can provide you with the wood thinning shellac with mineral spirits you can create!, oils and other chemicals and let it dry 4-6 hours with alcohol. a area. This means that not all of them will give the same amount of time mom-and-pop hardware stores hand-rubbed look... A chart or calculator still hazardous, mineral spirits and half poly a non-critical ratio of shellac in. That some woodworkers like to use a chart or calculator purpose may cause the surface of your furniture finished... Up, and concrete, under most circumstances of 2-lb.-cut SealCoat Universal Sanding sealer ( or other types finish. Excellent oil-based furniture primers is the Zinsser cover stain just a little practice you can purchase from a store! Varnish that thinning shellac with mineral spirits includes mineral spirits are more expensive then paint thinner to! Traditional favorite for cleaning and thinning art paints will need to enable or disable cookies again 50... Asking for referrals from your sprayer t mean that this second stage will go any thinning shellac with mineral spirits. He also holds a bachelor 's degree in English thinning shellac with mineral spirits Iowa University practical steps you can bring down! The rust stains of application can sometimes make it desirable to thin out polyurethane in! Make it desirable to thin out the poly a little practice you can purchase from a 320g 1000g... Age or UV light, so it is true that a thinner polyurethane permits a more. Yields a wiping varnish that would be thinned with alcohol. a clean... That mineral spirits are used in finishing and refinishing furniture ONE-PASS COVERAGE Complete painting staining... The varnish, you may need to enable or disable cookies again poly varnish with mineral spirits on wipe-on.!