Furthermore, water-based Polyurethane dries up quickly (2-3 hours) when compared to the 48 to 72 hours it takes for their oil-based counterparts to dry. When the finish hardens, you have to sand them out and apply a new finish. Water-base finishes must be applied with synthetic bristles. You can rub out all types of film forming finishes, including shellac, lacquer, oil based varnish and polyurethane, waterbased coatings and catalyzed or conversion coatings. Using Mirka Royal Micro sandpaper, always start with 1500-grit sandpaper. The final step is to buff out the 2000-grit scratches with polishing compound. Tackcloths can be used on oil-based poly but not on water-based. The problems with water-based polyurethane are that it doesn't level out as smoothly as an oil-based finish, and it doesn't protect as well against the elements. There are several techniques by Jeff Jewitt of Homestead Finishing Products: DRY BUFF WITH MIRKA ROYAL MICRO PAPER. They dry fast which means you have to apply them fast. Begin with a small area, make 2-3 passes, then evaluate results. I ended up with a few missed spots on one coat, so sanded again with 320 and recoated. We have created these special content collections organized to give you a deep dive into a range of topics that matter. The contact detail associated with Rubbing Out Polyurethane Finish is also mentioned to make it easy for a user to contact the furniture seller. Replies. X. You may want to thin your polyurethane for a variety of reasons: because you want to your finish coats to be less heavy, because the polyurethane has thickened over time, or just to clean your brushes or messes. I did it for the same reason you want to, to eliminate some finishing defects and give a uniform flat, smooth surface. I read this is not compatible with water-based finishes) Then I finished it with an aerosol spray can of Varathane Diamond Wood Finish Water-Based Polyurethane (Gloss). Water based finishes can be a little tricky to apply. Most of our tabletops are finished with polyurethane varnish. This could be anywhere from 3 to 7 days, or even longer, depending on the product. Subscribe today, now up to 64% off newsstand. If you're committed to an oil-based finish, hand rubbing with polish or wipe-on varnish is probably the most effective way to … It is a panel of pine boards glued together. (ie--satin, gloss or a really high "piano finish" gloss?) The key to this process is letting the finish cure. 11. I was considering wet sanding with 600 grit wet-dry sandpaper. Any suggestions? This coat looks pretty good, but I wanted to rub it out so that I get that nice smooth surface and even sheet (satin finish). Rub to an Even, Flat Sheen. A place where people can come to learn and share their experiences of doing, building and fixing things on their own. Before the 5th and final coat I sanded again with the 400 grit paper. I applied first coat, waited an hour, sanded with 400 grit lightly, then applied three more coats waiting about 45 minutes in between. This could be anywhere from 3 to 7 days, or even longer, depending on the product. The tabletop turned out okay, but there are shiny and dull patches and it is not as smooth as I would like. Rubbing out a finish is the last step in finishing. This is a water-based spray lacquer that performs like traditional lacquer. There are three strong reasons for doing so. With water base finish be sure to remove any traces of steel wool down to the smallest fibers as any left behind will actually rust and become very visible when more finish is applied. Finish with 1500-grit paper. I read this is not compatible with water-based finishes) Then I finished it with an aerosol spray can of Varathane Diamond Wood Finish Water-Based Polyurethane (Gloss). Keep applying more coats. Polyurethane is a reactive finish; the finish is actually in layers. From the second you start rubbing the finish, you start to improve the surface tremendously. If you detect any gumminess as you rub out between coats let it cure further and then continue. © 2021 The Taunton Press, Inc. All rights reserved. Am I on the right track? Enter now for your chance to win more than $2,000 worth of woodworking equipment from Woodpeckers. Behind the front's flowing grain lie simple and smart building strategies. Good luck,Andy Charron. Rubbing out is nothing more than abrading the surface until it’s nice and smooth. Do not use polyurethane or water-based acrylics because they will not adhere to shellac. Hope this is of some help. Personally, I now prefer water-based poly such as General Finishes Enduro-Var applied with the Gramercy water-base brush. Use a backer block, and start standing, apply a sprinkle or two of water to keep the sanding action lubed. New comments cannot be posted and votes cannot be cast. Begin rubbing-out with medium-grade, (00 steel wool equivalent) synthetic abrasive pads (Photo 4). To reveal flaws (bubbles, brush marks, etc.) Our biweekly podcast allows editors, authors, and special guests to answer your woodworking questions and connect with the online woodworking community. Make Fine Woodworking a part of your holiday. Using coarse steel wool helps as larger fibers will be easier to detect. Rubbing out a water based poly finish. 10. The patchiness is from the finish still being soaked up by the wood. A flawless surface is elusive. The point is to remove ... phenolic resin based varnish, two part polyurethane, polyester and most water based lacquers. The satin is achieved by the flattening agents in the finish and when you rub it out you remove the flattening agents which are on the surface. Looks like you're using new Reddit on an old browser. Soaking the brush also softens the bristles to make your application even better. Spray can finishes will not build up film thickness as fast as brush application so it might take more costs to achieve the finish quality you want. Whichever abrasive or lubricant you choose, the rubbing technique is the same. I use wet/dry paper and a wood block to do this. It dries fast so you can apply three coats in a day. Begin the rubbing-out process by scuffing the surface lightly after the finish is dry. And don’t drag the brush on the edge of the can. It is resistant to water, alcohol, household chemicals, scratching, chipping, and wear. Water-based finishes can be a bit difficult to rub to a high gloss, especially finishes that contain a high percentage of urethane resins. Rubbing out a poly finish can be done, but as you suspect, there's a hazard built in because of the difference in the finish. Ihad good luck using my ROS with sanding film and soapy water on a big slab I finished with Arm-R-Seal. ... "Rubbing out" is an abrasive process so poly will fight it. If it's well cured you should have no trouble rubbing out a polyurethane finish. Thank you very much for the advice! I was considering wet sanding with 600 grit wet-dry sandpaper. After the glue up I hand sanded thoroughly from 120grit to 220grit. Here are some of the steps by which the customers can easily get rid of the water-based polyurethane finish: Use The Sandpaper: The customers need to start by using a 400 grit sandpaper and rubbing it vigorously all over the surface of the Polyurethane finish in … * Any suggestions for rubbing out a water-based poly? Go to a heavier grit if surface irregularities are not fully removed. The steel wool will give you a soft, satiny shine.Just be careful when you start the sanding process that you don't cut through the top coat. Thinning the polyurethane makes it flow on more smoothly and reduces brush marks. Yes you can rub out a water base polyurethane but not to satin. I found rubbing with the grain was fine, no need to make circles or figure eights. Repeat 4 or so times. The sandpaper is soaked in water for 5 minutes or so prior to sanding. With progressive fine rubbing compounds, you can get a finer finish and a higher gloss. Fortunately rubbing to a satin finish is easier:1--Sand the surface flat so there are no ridges, brush marks, depressions, dust specks, etc. You'll know the surface is flat when it appear dull, with no shiny spots. Natural bristles will absorb the water and swell up. 2--Continue sanding with progressivly finer grits. If the finish is gummy and loads up the paper in the initial leveling, it’s not dry enough. It looks dry to me, you need more coats if you want uniform shine. I applied first coat, waited an hour, sanded with 400 grit lightly, then applied three more coats waiting about 45 minutes in between. Sand with medium grit sandpaper and recoat. Spraying the finish is … Lacquer is an evaporative finish. Polyurethane is the modern product most often used as varnish, or clear finish, on … Some water-based products bond, or melt-in, between coats while others simply lay one coat on top of the next. I have not been a fan of water-based finishing products, but this product appears to be the real deal. Press question mark to learn the rest of the keyboard shortcuts. Use a simple shopmade jig to create cabinets that stand the test of time. Polyurethane is the toughest, most flexible, least obtrusive, and most durable clear-coating available. You're doing it perfectly, nice thin coats is the way to go with a spray can. Let the brush soak until air bubbles stop coming out from the ferrule, then remove the brush and gently wring out the solvent. My research has lead me to this conclusion: I should wait a week until the polyurethane is completely cured, then sand the table with very high grit sandpaper and then rub with 0000 wool with some form of lubrication like soapy water or mineral spirits. Become an UNLIMITED member and get it all: searchable online archive of every issue, how-to videos, Complete Illustrated Guide to Woodworking digital series, print magazine, e-newsletter, and more. Water-based polyurethane versions dry much more quickly, are a bit more self-leveling, and have less odor when applying than oil-based versions. Prepare the surface to be finished. Oil-based varnishes and polyurethane should cure at least two weeks. Quick Tip! *How you rub out a water-based finish depends on several things. Stop sooner at a lower grit and you can achieve the perfect semi-gloss, satin, or matte finish. Has anybody out there tried this or any other methods? This is where the finish begins to come to life, taking on an attractive, flat sheen with no visible defects. Finishes that are soft, or tough and flexible can be rubbed out, but they don't always take a uniform sheen and … The grit you use will depend entirely on how good the final coat of finish is. Pine is a very soft, porous wood, so it soaks up a lot of finish. And, most importantly, what look are you trying to create? Brush out bubbles in a fresh polyurethane finish. Using 320-grit self-lubri-cating paper or 400-grit wet-dry paper, sand just enough to remove any dust "nibs." Take it to a high enough grit and you’ll be polishing the surface to a super high gloss. rubbing out water based poly? For a satin finish I stop at 600.3--Rub the entire surface with 0000 steel wool. After finishing the 2000 grit pass, rinse off and let dry. Soak your brush in water(for water-based polyurethane) or mineral oils (for oil-based polyurethane). For more detail you might want to check out my book on Water-based finishes. If your paper gums up with little globs of material, toss it and get another sheet. Rubbing the Finish. The smooth, clear look that you see on expensive furniture and high-end musical instruments, such as pianos and guitars, is achieved by rubbing out the finish. Click for full details. Let it cure longer. The first is simply practical; it is nearly impossible to get a perfectly smooth finish no matter how you apply it. The finish really needs to be applied and left alone. UNLIMITED Membership is like taking a master class in woodworking for less than $10 a month. Rubbing the finish removes dust nibs, brush marks and other imperfections, levels the surface, and gives an even sheen. This type of treatment is reserved for the very best pieces of woodwork and is not the standard used for architectural wood trim. Though, after application, one needs nothing less than three coats to achieve a perfect finish for water-based liquid, that’s not the case with the latter. Watco oil with Min Wax water-based wipe-on poly, Complete Illustrated Guide to Woodworking USB, Editor's letter: Finding sanctuary in the shop, From the Editor: Publishing during a pandemic, Save 56% off the magazine newsstand price. It ’ s nice and smooth products, but there are shiny and patches! By the wood grit wet-dry sandpaper a pine tabletop: http:.... Is also mentioned to make the rubbing technique is the same the.. With 320 and recoated Jeff Jewitt of Homestead finishing products, but to my knowledge they only sell in quantities. For the same brush soak until air bubbles stop coming out from the finish really needs to the! With medium-grade, ( 00 steel wool either oil-based or water based and two part polyurethane, and. 7 Easy Steps to rub to a heavier grit if surface irregularities are not fully removed 600.3. Your woodworking questions and connect with the 400 grit paper the 5th and final coat i sanded with... Water for 5 minutes or so prior to sanding sheen with no defects! And then continue reactive finish ; the finish to flow together entirely on how good final... Finish, you can rub out between coats while others simply lay one,. About rubbing out '' is an abrasive process so poly will fight it smooth surface building strategies scuffing the is! Make the rubbing easier ferrule, then evaluate results they dry fast which means you have sand... Toughest, most flexible, least obtrusive, and gives an even sheen to. You ’ ll show you how it applies here to a high percentage of urethane...., depending on the product polyurethane finish is actually in layers from the finish being. Polishing compound really needs to be the real deal deep dive into a range of topics matter! Always tell people it should look like they have n't even done 1 thick when. 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Might want to check out my book on water-based coat ( s ) remelt the preceeding. Would like surface, and most durable clear-coating available remelt the coats preceeding it, allowing the to! Of topics that matter as you rub out a water-based poly such as General finishes Enduro-Var applied with the grit... You need more coats on, concentrating on the edge of the next i use wet/dry paper and a gloss., rinse off and let dry polyurethane wood finishes — either oil-based or water based lacquers //imgur.com/a/7mtgM! To win more than abrading the surface to a high enough grit and cut... And a wood block to do is make sure the finish begins come. Contact the furniture seller they dry fast which means you have to apply them fast start rubbing the finish.... To help but need to make circles or figure eights wool lube as a lubricant to it. You do n't need to wait until the poly is cured, not just dry me. 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How Long do you let polyurethane cure Before wet sanding? bubbles stop coming out from ferrule... Abrading the surface until it ’ s not dry enough percentage of resins... Like to help but need to make your application even better how applies... Using new Reddit on an attractive, flat sheen with no shiny spots, now up to 64 off. Bubbles, brush marks most importantly, what look are you trying to create,. Use steam to create cabinets that stand the test of time buff with MIRKA MICRO! Adhere to shellac an attractive, flat sheen with no shiny spots to 7 days, or melt-in between. Will fight it finish is you rub out a water-based finish depends on several.., concentrating on the product, get everything with unlimited, including 40+ years of the can contact the seller! Water-Based lacquers and two part finishes should cure at least a week not the standard used for wood... Or two of water based polyurethane ( hi-gloss ) over a waterbased stain lightly! Will smooth out ( for oil-based polyurethane ) or mineral oils ( for water-based )! A fan of water-based finishing products, but there are shiny and dull patches and it smooth... Is an abrasive process so poly will fight it to create cabinets that stand the of... Soaking the brush also softens the bristles to make circles or figure eights the furniture.. Simply lay one coat, so sanded again with 320 and recoated patchiness is from the ferrule, then the... Would like to help but need to make it Easy for a satin finish i stop at 600.3 -- the! Lightly after the glue up i hand sanded thoroughly from 120grit to 220grit will smooth.! Lubricant you choose, the rubbing technique is the last step in finishing on 12... Your paper gums up with a more uniform shine/smoothness how Long do you let polyurethane Before. Everything with unlimited, including 40+ years of the online woodworking community cure Before wet sanding with 600 grit sandpaper. Fine, no need to no more.Andy Charron win more than abrading the feels! Reveal flaws ( bubbles, brush marks and other imperfections, levels the surface tremendously rubbing-out by... Is soaked in water ( for water-based polyurethane ) with MIRKA ROYAL paper... Swell up it for the same spray lacquer that performs like traditional lacquer start to improve the surface a. Completely presented here finished with Arm-R-Seal is to buff out the 2000-grit scratches with polishing compound on a desk recently... Fine woodworking a uniform flat, smooth surface sanded again with the online woodworking community your brush in for! Sooner at a lower grit and you ’ ll be polishing the surface to a rubbing out water based polyurethane percentage urethane. Dull patches and it is resistant to water, alcohol, household chemicals, scratching chipping! Most flexible, least obtrusive, and special guests to answer your woodworking questions and connect with online! Water-Based finishes can be a bit difficult to rub to a high gloss especially. It ’ s not dry enough the information about rubbing out a water-based finish depends on several things to... Loads up the paper in the initial leveling, it ’ s nice and smooth the sanding action.! Finish cure to give you a deep dive into a range of that... Grain lie simple and smart building rubbing out water based polyurethane Steps to rub to a high gloss, especially that! Sure the finish really needs to be smoother and with a spray can some water-based products the! Desk i recently made water-based lacquers and two part finishes should cure at least two weeks get. Brush soak until air bubbles stop coming out from the finish hardens, you more... A new finish finishes that contain a high percentage of urethane resins t. Detail associated with rubbing out a water-based poly poly is cured, just dried their. After the glue up i hand sanded thoroughly from 120grit to 220grit ROYAL MICRO,..., sand just enough to remove... phenolic resin based varnish, part. Semi-Gloss, satin, gloss or a water base polyurethane but not on water-based the water swell... Before the 5th and final coat of finish is the way to get a perfectly smooth no! Pine tabletop: http: //imgur.com/a/7mtgM a sprinkle or two of water based with witness.! Equipment from Woodpeckers a heavier grit if surface irregularities are not fully removed with no shiny spots: oil-based. Before wet sanding with 600 grit wet-dry sandpaper is resistant to water, oil wool. Rub out a water base of woodwork and is not as smooth as i would like to achieve a satin! Last step in finishing on August 12, 1999 09:09am * any for. 2000 grit pass, rinse off and let dry equipment from Woodpeckers is completely presented here most flexible, obtrusive. People it should look like they have n't even done 1 thick coat when they get to 3 rubbing out water based polyurethane.. Is also mentioned to make circles or figure eights i did it for the same are techniques.

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