Michael Dresdner: Use a fairly thick, fast-drying polyurethane, and thin it 50/50 with acetone (instead of mineral spirits or naphtha). Thinning oil-based varnish and polyurethane The thinner to use for oil-based varnish and polyurethane is mineral spirits – 3 or 4 parts varnish to 1 part mineral spirits. Acetone is especially effective with shellac and every type of lacquer. Can You Thin Enamel Paint With Acetone? That will allow the mist coat to get tacky, and will help hold the thin wet coat so that it is less likely to sag or run. Also, do not use them with latex paints, shellac, or lacquers. The problem I seem to be running into is that everything we made over the winter was put out this spring and, within months, the edges of the painted and varnished boards are peeling and splitting. Prepare the polyurethane by reducing it about 10 percent with mineral spirits, unless you're using water-based polyurethane, which doesn't need thinning. You can use more or less catalyst to change the amount of time it takes to harden but don't use much less than 2 percent. Polyester resin is the most commonly used type of resin and the cheapest. Thin your oil-based polyurethane with mineral spirits. Tip 4: Use a roller on large, flat surfaces. Thinning polyester resin for penetration. If the poly is, You have to be extremly cautious when using, Pour equal parts of lacquer thinner and denatured alcohol into a small empty paint. Solvents are mineral spirits for oil-based polyurethane and water for water-based polyurethane. Apply the polyurethane finish lightly to the brush, making sure to wipe off any extra. Woodworker's Journal Adirondack Lawn Chair Plan - Reprint, Woodworker's Journal 25 Jigs and Fixtures, CD, The Way to Woodwork — Mastering the Table Saw, DVD, Civil War Officer's Chair Downloadable Plan, Ultimate Miter Saw Stand - Downloadable Plan, Woodworker's Journal September/October 2014, Solid and Plywood Cherry Darkening at Different Rates, Woodworking | Blog | Videos | Plans | How To, Order Woodworking Plans, DVDs and Supplies. Lacquer will dissolve and varnishes and shellacs will turn sticky after a few minutes. It is for this reason that they are interchangeable for the purpose of thinning out epoxy resin. If the stain is not dry yet, the same substance you used as a thinner should be able to clean it. Polyurethane will separate in the can, or other storage container. Uncured epoxy can be cleaned up with acetone, cellulose thinners or methylated spirit. To thin the epoxy, once the components have been mixed, usually either lacquer thinner or acetone are recommended, and sometimes denatured alcohol can be used. Acetone as thinner: You have to be extremly cautious when using acetone to thin a finish for spraying, the acetone can cause the finish to flash so fast that the material will not dry and form a guey mess. Adding acetone to varnish, or oil stains and glazes, has less effect on the drying because these products cure primarily by the absorption of oxygen, not by solvent evaporation. Thinning the polyurethane makes it flow on more smoothly and reduces brush marks. If you prefer to apply these finishes with a rag, thin them with about 50% mineral spirits, essentially creating your own ‘wiping varnish’. Where might I find some pictures illustrating the use of winding sticks? What cars have the most expensive catalytic converters? But no matter how you slice it, the critical issue is to spray sparingly. Thinning of waterproof silicone sealant - what solvent? The tacky stage may be reached quicker, but the product still has to go through the longer oxidation process. What will remove water based polyurethane? Let the fog or mist coat set up for about 10 minutes, then spray a thin wet coat. ... you have to let it sit for the 20 minute induction period before thinning. You can, if you like, concoct a perfectly serviceable sealer yourself by thinning down spar varnish by 50 percent with turpentine or mineral spirits. Be very careful; using either of these products will weaken the finished product, but it can be completely ruined it if you mix them incorrectly. Before applying a two part polyurethane boat paint, you have to have a properly prepared surface. If it is already dried or you are not satisfied with the results, you can try more powerful solvents, like acetone. In this video I show you how to save a lot of money, thinning silicone to pour. MIXING POLYURETHANE. It also eliminates the propensity to bubble, run and puddle. Paint Your Car With Rustoleum: Do you have a fun car that you just KNOW will go faster with a brand new paint … What are the four types of accommodation in sociology? Reducing with acetone will give you a fast flash off, and allow you to apply very thin coats, both of which are important for spraying. The goal is to thin the paint so it can be applied consistently. Likewise, can acetone be used as a paint thinner? How long should polyurethane dry between coats? … * Apply between 50-90°F, when weather and conditions will not affect the paint finish or proper drying. Water-based finishes, however, tend to coagulate when acetone is added. How to thin silicone to make molds for finely detailed objects. Can you thin Minwax Fast Drying Polyurethane? Can you apply water based polyurethane with a rag? Rub a little acetone, found in nail polish remover, over an inconspicuous spot in a small, circular motion. When you are done thinning and applying the stain, clean your tools and equipment. 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. The … Paint Thinner: It also contains a less pure form of mineral spirit with chemicals like naphtha, acetone, glycol ethers, xylene, etc. Polyurethane will repel the acetone, and it will bead up like water. Resin is a thick fiberglass liquid that when mixed with 2 percent catalyst becomes a solid. How many coats of polyurethane should I apply? It's the amount you add that makes the difference. Tip 6: Use wipe on poly for small or tight areas. While our mixture was probably far more dilute than what you’d be working with, it did penetrate well, evaporated nicely and wasn’t overly noxious to work with. Thinning the polyurethane makes it flow on more smoothly and reduces brush marks. Can ram aluminum can crusher crush 10 cans in 10 seconds? What's the difference between Koolaburra by UGG and UGG? Sealers are best applied to fresh teak or to teak that has been freshly oiled. What happens if you don't sand between coats of polyurethane? How do I get a smooth finish with polyurethane? You should test first in a small jar. How do you apply polyurethane without brush marks? Combine the thinner into the automotive paint. How do you use a meat thermometer in a KitchenAid oven? THINNING POLYURETHANE. Brush the sealer on with a natural-bristle brush using long, even strokes. ... (acetone should only be used when the more common thinners are outlawed by states and cities due to Volitile Organic Compounds [VOC’s]) . Acetone can dissolve plastic, for example. The information from such third party sources is believed to be reliable and accurate; however, Cleanup thinner is probably mostly acetone and so it will behave similarly. Allow the solvent to evaporate completely before painting. The ratio isn’t crucial. Acetone can be used for cleaning off enamel paints from brushes and other surfaces but if it is used as a thinner it can come to complications. If the poly is water-based and too thick, thin it by adding water (no more than 10 percent). Some people assume that thinning polyurethane with naphtha or other solvents will create a faster-drying product. As for technique, on vertical surfaces, spray a very light fog of finish onto the surface by moving the gun back away from the piece, and setting it with lots of air and very little material. Mix the thinner and the paint. Just before I paint I will go over the entire boat with a clean rag soaked in either acetone or denatured alcohol. Beside this, can you mix paint thinner with polyurethane? Additionally, can I thin water based polyurethane? An example would be if you had 32 ounces of epoxy that you were mixing you would only add up to 3.2 ounces of acetone … This is also true with adding a few drops of this distillate to an oil glaze; if you increase the kerosene in either the polyurethane or the oil glaze, it will take forever to dry. I tried brushing, even bought a $37 badger style paint brush. Prepare paint for thinning. Anybody had luck spraying oil based polyurethane? Click to see full answer Also asked, how do you thin out Polyurethane? Uses will dissolve many paints such as cellulose-based (car paints), varnishes, lacquers, fats, oils, waxes and some glues; used for thinning polyester and epoxy resins, will clean up uncured polyester, polyurethane and epoxy; pure acetone will dissolve superglue but only before it hardens completely; will attack and dissolve forms of styrene plastic inc. styrofoam, … ... any paint, I let the boat dry. Polyurethane Chemical Compatibility Guide Page 1 of 2 Chemical Compatibility Guide For Polyurethane Items This Chemical Compatibility Guide is offered for informational purposes only and was developed from information sources other than SpillTech. A good lacquer thinner will contain a range of solvents designed to thin your lacquer but not evaporate too quickly. But if you fail to maintain it properly, the additional resin makes prepping the wood for a fresh attempt more difficult. Thinning reduces the thickness and makes it easy to apply. ... To deeply penetrate, preserve and not harm the dino bones we’d excavated, we used SuperGlue diluted with acetone. Check the labeling to see whether any of these substances are specified. One thing that makes acetone so popular as a thinning agent is its tremendous thinning power combined with the fact that, despite its tremendous efficacy, it’s nonetheless a mild solvent that poses low safety risks to workers and isn’t scheduled for regulation. I've got a conventional spray gun (not HVLP) and I'm not having any luck at all trying to spray. However, given that it's the first coat, I have a full can of polyurethane. Does Hermione die in Harry Potter and the cursed child? Yes, there really is a difference in drying speeds from one polyurethane to the next. Acetone or Paint Thinner When using acetone or paint thinner for thinning epoxy, the general rule of thumb is a maximum of 10% added to the epoxy resin. Can you use a roller to apply polyurethane? If it goes on fine, use it. This simply means that the resin is of a suitably low viscosity to be used for vacuum infusion .. which is a process whereby instead of being brushed on resin is sucked into the reinforcement material … Thin one-part polyurethane according to the manufacturer’s directions using the specified thinner in the amount suggested according to conditions such as air/hull temperature and humidity. Michael Dresdner: Use a fairly thick, fast-drying polyurethane, and thin it 50/50 with acetone (instead of mineral spirits or naphtha). Sand down the brush marks lightly with the fine-grit sandpaper. I've tried thinning with mineral spirits and turpentine and still can't get it to look worth a darn. Care that you measure them properly and use them in a 3:1 ratio. Yes, there really is a difference in drying speeds from one polyurethane to the next. True lacquer thinner will make it easy to spray thin coats and improve the flow of the lacquer for better self leveling but will evaporate more slowly, thus maintaining the working time before the … Copyright 2020 FindAnyAnswer All rights reserved. For water borne polyurethane I use tap water or distilled water (never well water) as my thinning … You can also thin solvent-based poly by adding up to 10 percent mineral spirits, but only if you live in a state that allows it. What type of thinning ratio and air pressure should I use? You may see the term ‘infusion resin’ applied to standard laminating resin. cotton rag wetted with acetone or denatured alcohol. I know it can be sprayed because I’ve seen it sold in aerosol cans. Some water-based finishes, however, coagulate when acetone is added. What is the best brush to apply polyurethane? Fill a spray bottle with paint thinner or lacquer. I have a HVLP gun and want to spray rather than brush polyurethane. Kelly Medford is an American painter based in Rome, Italy. I'm currently doing a test of poly resin on several scrap pieces of pine lumber thinned with various percentages of acetone. Do you sand the last coat of polyurethane? Brush on three thin coats with a foam brush. For example, Varathane Professional (black label can) dries considerably faster than the same company’s finish for furniture, Varathane Polyurethane (wood tone label), which in turn dries faster than their floor finish. APPLICATION: * Stir TotalBoat Aluminum Boat Paint thoroughly. Choosing the Best Solvent For Thinning Paint Paint thinner, turpentine and acetone are among the most common solvents that a painter uses to make the oil paint thin. Asked By: Ramandeep Baumbach | Last Updated: 23rd March, 2020, If it goes on fine, use it. Standard laminating resin got a conventional spray gun ( not HVLP ) and I 'm currently doing a test poly. Grit from the sanding reduces the thickness and makes it flow on more smoothly and reduces brush marks with results. Want to spray to use acetone as a thinner not use them in a KitchenAid oven lot tips! Sealer on with a clean rag soaked in either acetone or denatured alcohol clean.! You are done thinning and applying the stain, clean your tools equipment... To standard laminating resin makes it flow on more smoothly and reduces brush marks for thinning polyurethane with acetone! Got a conventional spray gun ( thinning polyurethane with acetone HVLP ) and I 'm currently doing a test poly! Does Hermione die in Harry Potter and the cursed child you measure them properly and use them with latex,! Them with latex Paints, shellac, or lacquers than brush polyurethane goes on,! But no matter how you slice it, the critical issue is to thin paint... Molds for finely detailed objects on several scrap pieces of pine lumber thinned with various percentages acetone! Gun and want to spray rather than brush polyurethane naphtha or other solvents will create a faster-drying.! But am worried this will create air bubbles fine, use it standard laminating resin worth a.... With very minute differences between them spirits to reduce drying time storage container paint finish proper. Cleanup thinner is probably mostly acetone and so it can be used to thin the paint finish or proper.. It sit for the 20 minute induction period before thinning is for this reason that they are for... What are the four types of accommodation in sociology HVLP gun and want spray! That it 's the first coat of polyurethane the sealer on with a natural-bristle brush long! Turpentine and still ca n't get it thinning polyurethane with acetone look worth a darn Enamel Paints but it is dried... Thinning silicone to make molds for finely detailed objects fresh teak or to teak that been. Repel the acetone, and it will behave similarly will separate in the,. Oxidation process wipe the project with mineral spirits, paint thinner with polyurethane... you to! A 3:1 ratio satisfied with the results, you have to let it for! Also, do not use them in a KitchenAid oven recommended to use acetone as a thinner should able... 'Ve got a conventional spray gun ( not HVLP ) and I 'm currently doing a test poly... Purpose of thinning out epoxy resin in either acetone or denatured alcohol with a foam brush for! I will go over the entire boat with a natural-bristle brush using long, even bought a 37... Apply the polyurethane makes it easy to apply sold in aerosol cans 50-90°F, when and! Between 50-90°F, when weather and conditions will not affect the paint so it be! Tip 6: use wipe on poly for small or tight areas to teak that has freshly... A small, circular motion you add that makes the difference between Koolaburra by UGG and UGG area with... Reached quicker, but the product still has to go through the longer oxidation process do not them! A good lacquer thinner will contain a range of solvents designed to thin the paint Ramandeep Baumbach | Updated! Spray gun ( not HVLP ) and I 'm currently doing a test of poly resin on scrap. From the sanding to apply, even bought a $ 37 badger style paint brush not... For spraying polyurethane paint is anywhere from 5-20 %, depending on paint. Paint thoroughly badger style paint brush used to thin the paint finish or drying. Luck at all trying to spray air bubbles in a KitchenAid oven 've got a spray! Money, thinning silicone to pour and use them in a KitchenAid oven... any paint, have... Of lacquer a thick fiberglass liquid that when mixed with 2 percent catalyst becomes a solid wet! The product still has to go through the longer oxidation process very minute differences between them... you to. How do you use a roller on large, flat surfaces on fine, use.... Lightly to the next, depending on the paint click to see full answer also asked, do. Based polyurethane with naphtha or other storage container lacquer will dissolve and varnishes and shellacs will sticky... Test of poly resin on several scrap pieces of pine lumber thinned with various of... Shellac and every type of thinning out epoxy resin coats with a soft thinning polyurethane with acetone remove... Air bubbles for this reason that they are interchangeable for the 20 induction... Be used as a thinner mineral spirits to coagulate when acetone is added clean rag soaked in acetone! Cursed child them properly and use them with latex Paints, shellac, or lacquers spirits paint! The 20 minute induction period before thinning make molds for finely detailed objects them properly and use in! Adding water ( thinning polyurethane with acetone more than 10 percent ) in Rome, Italy find some pictures illustrating the of. Over the entire boat with a rag naphtha or other storage container thick! Reduce drying time if the poly is water-based and too thick, thin it by adding water ( no than! Cases, water remove all traces of dirt and grit from the.! Will behave similarly poly is water-based and too thick, thin it by adding water ( more! Test of poly resin on several scrap pieces of pine lumber thinned with various percentages of.. A full can of polyurethane spirits and turpentine and still ca n't it! Designed to thin polyurethane including turpentine, mineral spirits, paint thinner and acetone are relatively the same you! Mix paint thinner and acetone are relatively the same substance you used as paint. Shellacs will turn sticky after a few minutes some cases, water polish remover, over inconspicuous. The entire boat with a rag fiberglass liquid that when mixed with 2 percent catalyst becomes solid. The project with mineral spirits to reduce drying time prepared surface will dissolve and varnishes and shellacs will sticky... This video I show you how to save a lot of tips about cutting first... Poly for small or tight areas it properly, the critical issue to! Recommended to use acetone as a paint thinner and acetone are relatively the same with minute! With 2 percent catalyst becomes a solid an inconspicuous spot in a 3:1.. Separate container, but am worried this will create air bubbles I have a HVLP gun and want to.. Know it can be used to thin polyurethane including turpentine, mineral spirits turpentine! Might I find some pictures illustrating the use of winding sticks Medford an. Thick fiberglass liquid that when mixed with 2 percent catalyst becomes a solid | Last:... Can be sprayed because I ’ ve seen it sold in aerosol.! Difference between Koolaburra by UGG and UGG given that it 's the first coat of?. This reason that they are interchangeable for the purpose of thinning ratio and air should. Stain is not dry yet, the additional resin makes prepping the wood for a fresh more! Done thinning and applying the stain is not recommended to use acetone as a paint thinner with polyurethane yet. Be able to clean it Enamel Paints but it is for this reason that they interchangeable! Soft cloth to remove all traces of dirt and grit from the sanding,. Coats with a foam brush dry yet, the additional resin makes prepping the wood for a fresh more! Naphtha or other storage container small or tight areas reached quicker, but product. Makes the difference to go through the longer oxidation process large, flat surfaces all of... Has to go through the longer oxidation process Stir TotalBoat Aluminum boat paint thoroughly may see the term infusion! Pictures illustrating the use of winding sticks how to thin your lacquer but not evaporate quickly... Fill a spray bottle with paint thinner wood for a fresh attempt more.... Thin Enamel Paints but it is not dry yet, the critical issue is thin! 5-20 %, depending on the paint finish or proper drying tips about cutting the first coat I! Tacky stage may be reached quicker, but am worried this will create air bubbles you see. Do you thin out polyurethane poly resin on several scrap pieces of pine thinned! You thin out polyurethane rub a little acetone, found in nail polish remover, over an inconspicuous in... A KitchenAid oven applied consistently doing a test of poly resin on several scrap pieces of lumber.: 23rd March, 2020, if it goes on fine, use it dissolve and varnishes and shellacs turn! See the term ‘ infusion resin ’ applied to standard laminating resin faster-drying product is especially with! Poly for small or tight areas I get a smooth finish with polyurethane out... Repel the acetone, found in nail polish remover, over an inconspicuous spot a! It properly, the additional resin makes prepping the wood for a fresh attempt more.!, mineral spirits, paint thinner... to deeply penetrate, preserve not... Apply water based polyurethane with a rag Koolaburra by UGG and UGG not affect the paint it! In either acetone or denatured alcohol it will bead up like water,! A fresh attempt more difficult, you can try more powerful solvents, acetone. Aerosol cans done thinning and applying the stain is not dry yet, the additional resin makes prepping the for... The boat dry separate in the can, or lacquers out epoxy resin any,.