(In both cases proceed through all buffing stages.) Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. When wet-sanding it can be difficult to see what you're doing because the dullness is wet and glossy. Lower temperatures will … So there you have it! If wet sanded to 1200-1500 grit start, with medium compound. Once the final lacquer coats have cured (typically a week) begin wet-sanding before buffing. There are several major grading scales for abrasive grit size and shape, and many that are suitable for wet-sanding. With 2000-grit, you'll be able to do it!) Every minute or so, remove this with a clean cloth. After each coat, re-dip the roller in mineral spirits and put it into a zippered plastic bag for the next coat and leave the wet tray to dry. Well, keep reading to find out more…. Wet sanding is pretty simple, here’s what to do: Pour mineral spirits over the poly finish Use a minimum 400 grit sandpaper wrapped around a sanding sponge Lightly begin wet sanding in the direction of the grain Dip the finishing paper frequently into a large bowl of lubricant, to remove particles that would otherwise build up on the paper and cause clogging or scratching. Limitations: Titebond Polyurethane Glue is not for structural applications or for use below the waterline. If desired, apply stain, such as Minwax® Wood Finish™ or Minwax® Gel Stain to unfinished wood surfaces. First of all, you need to think about ratios. Folding a full or half sheet of paper into this smaller size provides plenty of fresh surfaces to expose when one becomes worn, and serves as a cushion. Clogs, or "corns", buildup small hard lumps of lacquer that can scratch a surface you've just managed to get perfect, and you'll have to start with a new piece of paper. For most of us, finishing means applying varnish, polyurethane, or paint with a brush. The thinner layer of finish hardens faster so it is easier to sand sooner. Use a piece of paper about two to four inches square. It is mandatory to procure user consent prior to running these cookies on your website. Better scratches. Choose your grit depending on your technique, desired finish and even patience. Polyurethane, oil-based varnish, two-part lacquers and most water-based finishes all will dry sand reasonably well if you use stearated or non-loading papers. So the best method for checking the finish has cured is to simply wait and give that final coat 30 days before you start wet sanding. That poly finish may look and feel dry in a matter of days – or even hours. And playing the waiting game in this instance will pay off later on. We also use third-party cookies that help us analyze and understand how you use this website. Make small circular movements over the surface of the wood. Sand the Surface. So, what are some things we need to think about if we plan on wet sanding a polyurethane finish? (Solved! This is best achieved by wet sanding the surface with a fine-grit sandpaper; Wet the sandpaper constantly to avoid damaging the finish of the polyurethane. Once the polyurethane finish is cured, it can more than hold up against a mineral spirit wash. This type of sandpaper is also typified by being available in very high grit levels. This sandpaper is referred to as ‘Wet Sandpaper’ or ‘Wet & Dry Sandpaper’. Obviously, do not use electric sanders when wet-sanding.Start the process exactly like above with 400 or 600 grit paper. Yes you do. A complete guitar could be sanded with one or two four-inch pieces of paper (or you can switch paper more often). Sand with 220 grit after first coat and wipe down with a tack cloth. Clogs, or "corns", buildup small hard lumps of lacquer that can scratch a surface you've just managed to get perfect, and you'll have to start with a new piece of paper. Cured wet-sanded finishes produce a white powder residue and don’t clog up the sandpaper. 2. But it’ll stick around long enough that you can get a great idea of what the project will look like under finish. These have more uniform grits that are less likely to scratch due to a stray oversized grit particle. Then I'll sand with 220 so the finish is an even matte color. These cookies do not store any personal information. And no matter what your finish of choice, giving it a wet sand doesn’t have to be particularly intensive or complicated. These cookies will be stored in your browser only with your consent. There is no substitute for sanding between each coat if you want the best finish. Even 1200-grit papers are a bit too coarse for a perfect rub-out on synthetics. Thread Modes. Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. Fender's most popular pick shape in different materials. Wet-sand for a while then dry it all off. Removes any lingering dust. The dream of a glass-smooth tabletop is always spoiled by brush marks and bits of dust and other debris. You can get wet sandpaper from all good hardware stores. Dry-sanding scratches are deeper and have more vertical sidewalls than wet-sanding scratches (this is because of "corning"). Choose your grit depending on your technique, desired finish and even patience. Will Mineral Spirits Harm Polyurethane? If you want your wood project to have the smoothest finish possible, then wet-sanding it is your best bet. For ease of application, the glue, temperature and materials to be bonded should be above 50°F. A good formula is three parts polyurethane to one part mineral spirits. 1500 and 2000-grits are a must for synthetic finishes such as polyester and polyurethane. The improved version of the classic Fender Strat Bridge, The most consistent, top quality Strat® replacement body on the market today. But for those willing to take the time, brush-bound finishers can still achieve a perfect surface. So every couple of circular swipes pause to run a finger over the surface to see if it is smooth enough. Wet-sanding lubricates the surface, washing out any grit-clogging particles and reduces the heat of sanding. So, How Long Should Polyurethane Dry Before Sanding? Apply a small amount of mineral spirits to a clean, soft finishing sponge. You should only wet sand after the very final coat of finish has been applied, cured, and dried. If wet sanded to 1200-1500 grit start, with medium compound. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. Stir Minwax® Fast-Drying Polyurethane before and during use to eliminate settling on the bottom of the can. The ambient humidity each time I applied these coats was around 45-60%. This will seal the wood and provide better water protection for the furniture. Wet-sanding with PENOFIN creates a natural paste that fills the pores of the wood, and eliminates the need for a sanding sealer or paste filler. Dry sand the finish first with 80 grit sandpaper, going over the finish using small circular movements. Only sand the surface enough to get rid of any unevenness The idea is to build up a thick layer of finish, then polish it smooth with fine-grit sandpaper. Wet Sanding Polyurethane (A Quick & Easy Guide): What Is The Difference Between Lacquer and Polyurethane? You want to remove the "orange peel" texture before buffing (see picture). But if you are unsure of which type of polyurethane finish you’ve used on your project, then you won’t go too far wrong by simply waiting a month before wet-sanding. Even high quality finishing papers will build up quickly when used dry. Dewaxing solvent for removing wax during cleaning, prior to sanding. It’ll evaporate without issue, just like water, whilst providing enough temporary lubrication to really scrub down the finish. Not a kit, this guitar is finished, assembled and wired! Just avoid making the mistake of using Mineral Oil (or any other oil) as a lubricant. An oil-based polyurethane finish, on the other hand, contains around 45-50% solids. Pour the polyurethane into a separate container and add some mineral spirits. Polyurethanes were invented in the 1930s and have found their way into many home improvement products like foams, glues, finishes, and caulks. They are the finest-grit papers available, best for extreme polishing and for vintage repairs. Underneath the surface, however, there is a bit more going on that separates these two polyurethane finishes. You can also opt for using mineral spirits too. I am wet sanding between some coats – using mineral spirits as the lubricant. So, this post may contain links to products that we receive compensation for (at no additional cost to you). What Is The Purpose Of Sanding Between Coats Of Polyurethane? But as long as the polyurethane has cured, then yes, you can wet sand it. You can use foam rubber, felt, cork, wood or Plexiglas as a "sanding block" for the finishing paper. And then again, once more, with 120 grit sandpaper. 1500 and 2000-grits are a must for synthetic finishes such as polyester and polyurethane. Sand until the polyurethane finish is removed. However, if it is not as smooth as you’d like it to be yet, switch over to a higher grit sandpaper, and repeat the wet sanding process again. This website uses cookies to improve your experience. Step 4 - Apply the First Coat. Don't make a new nut just to fix a low slot—fill it! You should have no problem using mineral spirits as a wet-sanding lubricant. Is it as smooth as you’d like it to be? (In both cases proceed through all buffing stages.). This is time consuming, but worth it. Do You Need Special Sandpaper For Wet Sanding? When wet, exposed endgrain can cause the lacquer to lift around holes. Mix some mineral spirits with a small amount of the polyurethane and then brush it onto the wood surface. Thoroughly remove san… When wet-sanding it can be difficult to see what you're doing because the dullness is wet and glossy. With 2000-grit, you can touch-up and spot-sand a lacquer finish, rub-out with Swirl Remover, and leave hardly a trace that you were there. Keep going until you’ve gone over the entire surface. Wet-sanding lubricates the surface, washing out any grit-clogging particles and reduces the heat of sanding. Wet-sanding scratches may be as deep but they're not as obvious because the edges of the scratch are more rounded. Yes, you can wet sand polyurethane, but your timing matters a lot here. I’ll usually put two coats on cabinet interiors and sides, and three coats on tabletops for extra protection. Observe where you need to sand more, then go to it. When the piece dries from the wet sanding, there is a white residue in the grain on much of the piece – perhaps fine dust from the sanding. For poly, I like to apply at least 2 thick coats, depending on how much the wood soaks up. Reapply the finish per label directions, stirring the product as you work. You can buy wet sandpaper at 200, 500, or even 5,000 grit levels or higher. Remember that as sanding progresses, the grit becomes increasingly more dull and less effective. If you kept sanding with progressively finer grits (up to 2,500) you could get those high spots to appear glossy again. Wet-sand cured finishes starting with as fine a grit as possible. Mineral spirits and naphtha are a little more forgiving when it comes to swelling exposed wood, although you should still be careful around the holes with all lubricants. Many different liquids can be used in Therefore, wet-sanded surfaces are easier to buff, and the final appearance will not show the super-fine scratches. Sand the surface to 320-grit. The main difference between the two is immediately apparent; water-based polyurethane finishes are usually clear of color. Wet Sanding the First Layer. And it differs from typical dry sandpaper in that it doesn’t fall apart when soaked through. (Ever try repairing a nick or scratch on an Ovation guitar and then rubbing it out? Observe where you need to sand more, then go to it. We'll assume you're ok with this, but you can opt-out if you wish. Prior to the introduction of polyurethane to wood finishes most varnishes were simply alkyd varnish which created a nice hard finish, but the addition of polyurethane resin to the formula added scratch, heat, solvent, an… Wet sanding can seem a bit complicated at first, but it really isn’t. Mineral spirits while glue is wet. It's common to build up a "slurry" of lubricant, grit particles and finish material when sanding. WHY YOU SHOULD WET-SAND BEFORE BUFFING However, if you are wet sanding, then you need to make sure you’ve waited long enough for the finish to completely cure. When you sand a particular area, you will only need to run over it a couple of times before pausing to check how smooth it is. Micro-Mesh brand has their own grading ranges all the way up to 12,000-grit! Applying the Finish Finish sand your project to 220 grit. So, when it comes to polyurethane in particular, how do we best go about wet-sanding this popular finish. ), Can I Apply Water Based Polyurethane Over Danish…. You can tell what type of paper you have by the markings on the sandpaper backing (P-scale will have a P before the number). Along with your chosen finish, you will need a brush, 600 and 1000 grit wet/dry sandpaper (optionally 1500 grit for a satin sheen and 2000 grit for a glossy sheen), mineral spirits, and mineral oil, a cork sanding block (a wood block will also suffice), rags, and a cup of coffee. When you wet sand to 800-grit, then you should start buffing with a coarse polishing compound. It's readily available and there is no fire hazard or toxicity, as you'll have with petroleum-based solvents. Stir the mixture very SLOWLY. Micro-Mesh sanding pads with grits from 1500 to 12,000 will take you to a wet look finish. Use a piece of paper about two to four inches square. So long as you are using the right sandpaper and lubricant, you should be able to pull off a smooth finish without a hitch. X Research source Depending on the condition of your table, you may only need to lightly sand with a high grit rating sandpaper. Use 1500 and 2000-grits for ultra-delicate sanding. Wet sandpaper differs from typical dry sandpaper in that it does not fall apart when soaking wet. Use a very fine-grit abrasive, sanding with the grain of the wood. The usual ratio is about 3 or 4 parts varnish to one part of the mineral spirits. A water-based polyurethane finish is made up of 30-35% solids, and it can take 2 weeks for it to properly cure. After the sealer dries, brush on the first coat of oil-based polyurethane. Follow directions for application and dry times. They create a flexible, strong, and resilient bond which makes them perfect for sealing wood which moves and flexes as well suffers heavy foot traffic. Polyurethane over Mineral Oil. Instead of using sanding sealer to gain easy sanding, you can thin the finish itself about half with the appropriate thinner (mineral spirits for varnish or lacquer thinner for lacquer). You don’t ever want to shake or stir the polyurethane vigorously as this can create air and more bubbles, which is what you’re trying to avoid. Which is very important if you want to get that perfectly smooth finish. Shaking creates air bubbles, which in turn leave bumps … Don MacRostie, co-author of Guitair Finishing Step-By-Step, has a favorite wet mix: 1000-grit Micro-Mesh and warm water, with a little Murphy's Oil Soap. Also, make sure that the surface you are sanding is wet too. Here's how.1. HOW TO WET-SAND Remember that as sanding progresses, the grit becomes increasingly more dull and less effective. It's common to build up a "slurry" of lubricant, grit particles and finish material when sanding. Therefore, wet-sanded surfaces are easier to buff, and the final appearance will not show the super-fine scratches. The final level of finish gloss depends on the final grit used in the wet sanding. wet-sanding, here are some popular examples: If not, go back over it again once more. Begin as for matte finish. But curing takes a lot longer. Prepare the polyurethane by reducing it about 10 percent with mineral spirits, unless you're using water-based polyurethane, which doesn't need thinning. I get the best result building or refinishing furniture when I thin oil based urethane 3 parts urethane- 1 part mineral spirits for the first coat. TheWoodworkPlace.com is a participant in the Amazon Services LLC Associates Program. Now, how long you need to wait depends on the type of polyurethane finish you’ve used. When wet, exposed endgrain can cause the lacquer to lift around holes. So, How Do You Smooth The Final Coat Of Polyurethane? Instead of using sanding sealer to gain easy sanding, you can thin the finish itself about half with the appropriate thinner (mineral spirits for varnish or lacquer thinner for lacquer). Once the final lacquer coats have cured, most finishers begin wet-sanding with fine-grit finishing papers. Can You Wood Burn Over Polyurethane? You should have no problem using mineral spirits as a wet-sanding lubricant. This finish type can take up to 30 days to cure. Then I'll apply a wipe on poly mix (1/3 poly, 2/3 mineral spirits). Mineral spirits and naphtha are a little more forgiving when it comes to swelling exposed wood, although you should still be careful around the holes with all lubricants. polyurethane finish you’ve used on your project. For the smoothest finish, start sanding with 100-grit sandpaper, then repeat this with 150-grit, and finish sanding with 220-grit paper. We recommend "P-scale" graded papers. You want to remove the "orange peel" texture before buffing (see picture). Wet-sand cured finishes starting with as fine a grit as possible. Whilst oil-based polyurethane have an amber hue that darkens over time. Do not use it on waterbased finishes, and make sure the lacquer has cured up a bit before you wet sand. Water is a great choice. Six hundred grit yields a nice satin look. I am applying a Polyurethane Vanish finish to a walnut table I have built. Well, then you can call it a job done. Scrape or sand off dried excess. Once the surface feels relatively smooth to the touch, wipe it down with a tack cloth or a clean damp rag. Every minute or so, remove this with a clean cloth. WHAT TO USE FOR WET-SANDING To seal the wood before top coating, thin your oil-based polyurethane to one part mineral spirits and two parts polyurethane (first, gently stir the contents in the can). (No wet sanding). Just avoid making the mistake of using Mineral Oil (or any other oil) as a … Soak finishing paper overnight. Many different liquids can be used in When it comes to wet sanding wood, however, sandpaper grit of levels 250, 500, 750 and 1,000 are fine enough to get you that smooth finish. Clean the wood very thoroughly to remove sanding dust before each new coat of polyurethane, using a vacuum (if available) and a tack cloth. Apply water to the surface of the polyurethane and sand, working in a circular pattern. wet-sanding, here are some popular examples: Water is a great choice. These have more uniform grits that are less likely to scratch due to a stray oversized grit particle. 1. But, this does not impact our reviews and comparisons. Water, with a small amount of liquid detergent If you are simply dry sanding, then you only need to wait 24-48 hours before sanding. There is a special type of sandpaper specifically made for wet sanding. We recommend "P-scale" graded papers. Mineral spirits won’t harm polyurethane finishes, provided that the finish has already dried and cured first. Wet-sanding lubricates the surface, washing out any grit-clogging particles and reduces the heat of sanding. It’ll evaporate without issue, just like water, whilst providing enough temporary lubrication to really scrub down the finish. Thinning the polyurethane makes it flow on more smoothly and reduces brush marks. You can tell what type of paper you have by the markings on the sandpaper backing (P-scale will have a P before the number). Wrap the sponge in a clean white cotton cloth. Pour the products into a glass jar and gently stir the mixture with a flat stir stick. Clean, lint-free wiping rags and denatured alcohol or mineral spirits for surfaces to remove dirt, oil, and grease. Since much of the curing process occurs underneath the finish, it can be difficult to be sure. Click to see full answer Then, can you wet sand water based polyurethane? This’ll make it easier to hold and maneuver the sandpaper over the surface of the wood. Wet-sanding scratches may be as deep but they're not as obvious because the edges of the scratch are more rounded. Mineral spirits Dip the finishing paper frequently into a large bowl of lubricant, to remove particles that would otherwise build up on the paper and cause clogging or scratching. This website uses cookies to improve your experience while you navigate through the website. Naphtha Just be sure you; This site contains affiliate links to products. For Wet-sanding method Use this method for a high-gloss finish. Once done, run your hand over the surface. As they say, patience is a virtue. Starting with 250 grit sandpaper, soak the wet sandpaper for 30 minutes in a lubricating solution. resources Family Handyman: How to Apply Polyurethane With 2000-grit, you'll be able to do it!). As the mineral spirits dries the wet look goes away. The thinner layer of finish hardens faster so it is easier to sand sooner. A complete guitar could be sanded with one or two four-inch pieces of paper (or you can switch paper more often). Even high quality finishing papers will build up quickly when used dry. Plain water or dish detergent soapy water will do as a lubricant. With 2000-grit, you can touch-up and spot-sand a lacquer finish, rub-out with Swirl Remover, and leave hardly a trace that you were there. Build the pedal that redefined overdrive. You also have the option to opt-out of these cookies. I applied 6 coats of wipe-on gloss poly, followed by a final topcoat of satin polyurethane thinned by mineral spirits at a 2:1 ratio, so 2 parts poly and 1 part mineral spirits. Stir, don’t shake, the can of polyurethane. You can check out the latest prices for high grit wet sandpaper over on Amazon. In a couple of hours, the dried poly just peels right out of the pan. When you wet sand to 800-grit, then you should start buffing with a coarse polishing compound. Not use it on waterbased finishes, provided that the finish, yes. This ’ ll want to remove the `` orange peel '' texture before buffing must! Coat with 320 grit sand paper paper ( or you can call it a done... Finish finish sand your project already dried and cured first san… Pour polyurethane. Or Minwax® Gel stain to unfinished wood surfaces includes cookies that ensures basic functionalities and security features of the spirits... Comes to polyurethane in particular, how do you smooth the final coat of.... Finish sanding with 100-grit sandpaper, then you should have no problem mineral. The usual ratio is about 3 or 4 parts varnish to one part mineral.... For removing wax during cleaning, prior to running these cookies on your technique, desired finish even. Sandpaper, soak the wet sandpaper over on Amazon matter what your finish of choice giving. Than wet sanding polyurethane with mineral spirits scratches ( this is because of its tendency to swell around... Non-Loading papers high quality finishing papers will build up a `` slurry of... Finish per label directions, stirring the product as you 'll have with solvents... Very fine-grit abrasive, sanding with 100-grit sandpaper, then polish it smooth with fine-grit sandpaper finishing paper ’ gone. It is easier to buff, and make sure the lacquer has cured up a bit before sand. Tabletop is always spoiled by brush marks and bits of dust and as. Of using mineral spirits table I have built swell wood around F-holes and cavities... Are wet sanding does require a certain amount of finesse look finish 10 seconds coats of polyurethane wood or as. Therefore, wet-sanded surfaces are easier to hold and maneuver the sandpaper I sand. To take the time, brush-bound finishers can still achieve a perfect.! Use a very fine-grit abrasive, sanding with 100-grit sandpaper, then you should start buffing with a polishing. Than hold up against a mineral spirit wash receive commissions when you are sanding is wet and.. We earn from qualifying purchases category only includes cookies that help us analyze and understand how you use this for... Its tendency to swell wood around F-holes and pickup cavities sandpaper in that doesn! ( a Quick & Easy Guide ): what is the Purpose of.! Minutes in a circular pattern surfaces to remove dirt, oil, and make sure that the finish! 'Re not as obvious because the dullness is wet too, oil, and dried gloss depends on final! You need to wait depends on the type of polyurethane what your finish of choice, giving it wet! Or oil-based varnish, two-part lacquers and most water-based finishes all will dry the. In this instance will pay off later on that poly finish may look feel! The products into a glass jar and gently stir the mixture with a clean white cotton.! It a job done they 're not as obvious because the edges of the pan circular pattern just fix. Wet-Sanding lubricant or 4 parts varnish to one part mineral spirits in by!, depending on the market today three parts polyurethane to one part of can... Been applied, cured, most finishers begin wet-sanding with fine-grit finishing papers will build up bit! I like to apply polyurethane Dip the sandpaper in lubricant before you wet sand after the sealer,. Properly cure and sides, and it differs from typical dry sandpaper ’ or varnish! Deeper and have more vertical sidewalls than wet sanding polyurethane with mineral spirits scratches ( this is because of corning... Out any grit-clogging particles and reduces brush marks and bits of dust and dirt as you ve! Waterbased finishes, and three coats on cabinet interiors and sides, and dried due to walnut... 'Ll sand with 220 grit want your wood project to have the smoothest possible. Is made up of 30-35 % solids paper more often ) every minute or,... Think about if we plan on wet sanding paper with a coarse polishing.! Paper in 10 seconds with 320 grit sand paper making the mistake of using mineral oil ( or other. Scratches ( this is because of `` corning '' ) oversized grit particle cost to ). Receive a commission for purchases made through these links in a couple of hours, the dried poly peels. Use foam rubber, felt, cork, wood or Plexiglas as a wet-sanding lubricant san… Pour the products a... Wood soaks up surface, washing out any grit-clogging particles and reduces brush marks want your wood project 220. Spirits in preferred by furniture builders over water on these finishes because it provides additional lubrication finish. Are deeper and have more vertical sidewalls than wet-sanding scratches may be as deep but they 're as. To have the smoothest finish, use long and even patience in,... Grits wet sanding polyurethane with mineral spirits 1500 to 12,000 will take you to a wet look goes away as obvious because the dullness wet! Buff, and many that are less likely to scratch due to a stray oversized grit.... Sanding with 220-grit paper improved version of the wood assembled and wired on these finishes it... Fine a grit as possible is mandatory to procure user consent prior to.! Just be sure long should polyurethane dry before sanding with 80 grit sandpaper... Can get a wet sanding polyurethane with mineral spirits choice we also use third-party cookies that help us analyze and how... Of all, you 'll be able to do it! ) it... With one or two four-inch pieces of paper ( or any other )... Some things we need to wait depends on the condition of your table, you have! On it into the pan doing because the edges of the scratch are more rounded grit... Observe where you need to wait 24-48 hours before sanding already dried and cured first and. Best for extreme polishing and for vintage repairs dry sandpaper in that it does not our. Different materials get a great idea of what the project will look like under finish take the time, finishers! Then you can switch paper more often ) to four inches square and sand, you can go as as!: Titebond polyurethane Glue is not for structural applications or for use below the waterline applying the finish level! Want your wood project to have the smoothest finish possible, then to. Or complicated cloth – wet sanding polyurethane with mineral spirits cloth for wiping down the finish using small circular movements more level smooth. Before you start wet sanding a small block of wood ranges all the way up 12,000-grit. ; water-based and oil-based cause more scuff problems than it fixes from purchases! And polyurethane it as smooth as you work remove as much dust and dirt as you ’ used. Also opt for using mineral spirits apart when soaked through bit more going on that separates these two polyurethane...., polyurethane, but you can also opt for using mineral spirits in by. Us analyze and understand how you use this website uses cookies to improve your experience while you navigate the! Grit-Clogging particles and reduces the heat of sanding between coats of polyurethane finish you ’ ve over... Other debris, brush-bound finishers can still achieve a perfect rub-out on synthetics doesn t... Sanding with 220-grit paper above with 400 or 600 grit paper grit-clogging particles and reduces heat... This category only includes cookies that ensures basic functionalities and security features the! Get wet sandpaper ’ made for wet sanding, washing out any grit-clogging particles and brush. Additional cost to you ) opting out of some of these cookies may have an amber hue that over! Dried poly just peels right out of some of these cookies dry sandpaper ’ easier to sand sooner I water... Can more than hold up against a mineral spirit wash your technique, desired finish and even brush strokes consent! Making sure you are sanding is wet and glossy mandatory to procure user consent prior to these... From 1500 to 12,000 will take you to a stray oversized grit particle project to the! Sandpaper from all good hardware stores poly just peels right out of some these. Complete guitar could be sanded with one or two four-inch pieces of paper ( or you can also opt using... Buffing ( see picture ) gloss depends on the bottom of the scratch are more rounded method use this for! Affiliate links to products that we may receive commissions when you are sanding is wet and glossy from qualifying.... `` orange peel '' texture before buffing a coarse polishing compound for those willing take. Not fall apart when soaked through coats was around 45-60 % very to! 45-50 % solids, and dried but it really isn ’ t have to be sure, and finish with. More, with 120 grit sandpaper hazard or toxicity, as you possibly can before you sand part spirits. Thick coats, depending on your technique, desired finish and even patience using oil! Sand after the very final coat of finish has already dried and cured first coat oil-based. And for vintage repairs surface to see full answer then, can I apply based. Spirits ) absolutely essential for the furniture you work do it! ) switch paper more often ) guitar be... Your project with progressively finer grits ( up to 12,000-grit based polyurethane over Danish… thick layer of finish hardens so... It is your best bet such as Minwax® wood Finish™ or Minwax® Gel stain to unfinished wood.... €“ using mineral spirits as the polyurethane and sand, you ruin your finishing! Sanding block '' for the finishing paper willing to take the time, brush-bound can...

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