Directions on the can don’t say anything about it—leaving you to assume a less-thanperfect finish must be your own fault. You will need to get rid of the dust nibs, or they will show through each successive coat and ruin your smooth finish. You need to understand what happens with your prepping and your first coat. This means tabletops, end tables, nightstands, and coffee tables. Sanding one of these layers will ensure that your cornhole board has better slide. Refinishing a piece of furniture comes with many questions that you may have a hard time finding an answer to. After the final coat you can let the finish harden for a couple of weeks and then try to rub it out as doug has suggested. Smaller surfaces, you can opt for a foam brush or wipe on poly instead of soft bristle, although there are times you have no choice but to use bristle brushes. Brush marks often show up on pieces of furniture treated with polyurethane finish, usually despite the best efforts of the craftsman. Also Know, do you sand the final coat of polyurethane? Yes, you can lightly sand the final coat of polyurethane with a 600 grit sandpaper, however, sanding is not required. Since we talk about sanding a piece of polyurethane, if you sand the final coat and you applied one coat of poly, you could quickly go through to the bare wood. Brush on three thin coats with a foam brush. Maybe no sanding can work for you too! lou 05-09-2005, 11:30 PM #4. Let’s look at how we can create a final smooth touch to our poly projects. With a wipe on poly 3 coats usually equal 1 coat of brush on poly so since you sanded between coats you probably are at about 1 coat. While they both have uses, you tend to find for the best finish and protection of your wooden surfaces; the oil-based polyurethanes come out on top. You should ensure that you sand the previous coats so that you create a perfectly level and even base for your final coat. Here you can find out all you need to know about applying polyurethane to obtain the best finish. It's possible you are spraying too thick coats. Is One Coat of Polyurethane Enough if Sanding? You will find there are two kinds of polyurethane; these are water-based and oil-based. At least three coats of poly. Plus, most people don’t even notice the surface isn’t glass smooth. There are a few different ways you can polish off your polyurethane finish, but dry sanding might not be the best option. Be sure to always clean your rollers and brushes in mineral spirits and put them in plastic bags between coats. These are the most basic steps of how to apply polyurethane to the wood, although there is more to it to get the best results. Realistically, dry sanding polyurethane at any grit can potentially leave a scuffed looking cloudy surface. If this is your first time working with Varathane, there may be some uneven spots. However, you are now wondering if you need to sand the final coat of polyurethane? You can use a belt sander on larger projects, or sandpaper by hand on smaller wood items. Sand any rough spots on your bare-wood piece of furniture. No, you don't sand the final coat. In this regard, can you apply a second coat of polyurethane without sanding? Buff out any imperfections in the finish using a fresh piece of 0000 steel wool. I do not want any gloss, I am looking more into satin finish. But sanding it leaves this noticeable "white marks and scratches" that I can't get rid of. When you sand and rub out the final finish you take off most of the surface which contains the satin. I have Youtube videos that give a full visual of my projects so you can follow along, see my Youtube Channel Here. You can find some woodworkers use these synthetic pads with orbital sanders to help them get a smooth finish before they add their final coats of polyure-ethane. So if you already did this and thought you ruined your piece, just buff it out! Sanding can potentially leave a cloudy or scuffed looking surface to your polyurethane finish. This ensures the protectant goes on smoothly and actually provides a finished look. How do you get rid of those marks? This will allow the finish to dry faster, so you can sand the surface sooner. If you use the finest grit sandpaper you can get, you will have a silky smooth finish, though be sure to use a sanding block. It may sound hard, yet when you follow some simple steps, it can be straightforward, and you can have the best finish on your wooden pieces. After the final coat dries for 48 hours or more, we wet sand it with water and 400 grit sandpaper. Again, you have a couple of ways to obtain the best look. If you want a natural wood finish, you can skip the stain. Or applying another coat of polyurethane will hide such sanding scuffs. Once dried, lightly sand the surface with 220-grit sandpaper. Instead, it would be best if you sprayed it or spread it in a nice and level way. This will cause your wood project to quickly become damaged from traffic or water. Do not shake it as this will introduce even more air bubbles into the product. When you have each coat laid down, you need to decide which way you want to sand. You find many woodworkers say that sanding between coats is so the previous layer can adhere to the last.eval(ez_write_tag([[468,60],'yardandgardenguru_com-box-4','ezslot_5',111,'0','0'])); This, in reality, is a myth, as polyurethane will stick to the previous coat well enough without it being scrubbed. Apply the first coat of polyurethane, thinning it out with up to half of its volume of paint thinner. (Read Best Belt Sander). You will need to go through several phases to get the right finish, and they can comprise dusting, cleaning, waxing, and polishing. The idea is to remove dust bumps and create a rough surface a new coat can stick to. 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