Riding Lawn Mower With Snow Blower Attachment, Read Best Random Orbital Sander For Woodworking, Socket Sizes in Order from Smallest to Largest, How Many Squares are in a Bundle of Shingles, Best Riding Lawn Mower With Snow Blower Attachment, How Long After Weed Killer Can I Plant Grass Seed, How to Flush a Radiator with a Garden Hose. Refinishing dining tables and bookshelves, it’s nice to get as smooth as possible with your final coat of polyurethane. You may find it easier to use a sanding block to keep an even pressure. … This is standard practice with any wood finishing job, and is nothing out of the ordinary. Click to see full answer. Do You Need To Sand The Final Coat of Polyurethane? You should always sand each part of the coat to make the layers even and smooth. Four regular coats of urethane applied one over the other is a good starting point. Use 0000 fine steel wool and dip it in your finishing paste wax. If I get that scuffed surface, I need to apply another coat or buff with finishing wax paste. Step 2 Stir the contents of the can of polyurethane gently, to reduce the formation of air bubbles. Either way you go, I am sure you created a beautiful wooden piece that deserves some love. Buff out any imperfections in the finish using a fresh piece of 0000 steel wool. If you do this process, I recommend implementing the wax buffing process I mention below. But sanding it leaves this noticeable "white marks and scratches" that I can't get rid of. If any blemishes or bumps are still seen, use the same sanding process to remove them. Do not sand the paint before applying poly. Required fields are marked *. Places that aren’t used frequently you can probably skip and just let it be to save you some time. The reason for this is they are thicker and contain more solid compounds. You apply the final coat, let it dry and you're done. Sanding after staining will remove the stain in areas creating an un-uniform finish. As you progress through your sanding, redraw the lines, and each time they all disappear, you can move to the finer grit. This will allow the finish to dry faster, so you can sand the surface sooner. Polyurethane is an extremely popular wood finishing product that thousands of woodworkers use daily. Your email address will not be published. Honestly, in many of my projects where I apply a clear coat finish, I will sand between coats but not the final one. Failing to sand between coats of polyurethane does not have a significant impact on the finish. No, you are not supposed to sand the final coat. One tip is not to begin adding your polyurethane on the day you have sanded. Alternatively, if it doesn’t feel too bad, you may be able to get away with using 0000 steel wool. 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. Sand lightly with 240-grit sandpaper between coats, then let the last coat dry for at least 24 hours. Although sanding between coats is not required it is highly recommended for creating maximum smoothness. This does not cost you anything. Maybe no sanding can work for you too! How to Sand Polyurethane By Steve Sloane Things You'll Need. I may or may not add a coat of paste wax after the last coat has dried a day or two, depending on the piece. Even so, I still advise that you sand between the coats when applying polyurethane as this will help increase the adhesion between the layers to give you a more level finish. Enter your email address to subscribe to this blog and receive my latest updates on Youtube videos and more! Razor blade. While they take two or three coats, they can then offer a depth of shine not achieved by water-based polyurethane. Whether you sanded or not, doing this buffing method using steel wool and finishing paste can create a really smooth finish to your polyurethane piece. No sanding required. Three plus will get a smother finish. 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. When the pencil lines disappear, you’re ready to move on to the next grit. Just kidding, but I truly do hate sanding when I don’t have to! This will cause your wood project to quickly become damaged from traffic or water. Instead, it would be best if you sprayed it or spread it in a nice and level way. Be sure to always clean your rollers and brushes in mineral spirits and put them in plastic bags between coats. The owner is a part of the Amazon Services LLC Associates Program. Also Know, do you sand the final coat of polyurethane? Directions on the can don’t say anything about it—leaving you to assume a less-thanperfect finish must be your own fault. 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. It will raise the grain, and you can find yourself sanding one more time. Brush on three thin coats with a foam brush. Don’t forget to subscribe . Is One Coat of Polyurethane Enough if Sanding? Work your way up to 150/220. Here I will go over various methods that can be used individually or combined for great final results. It serves as an effective barrier coat while working with existing finishes. It with water and 400 grit sandpaper, however, sanding is not say. Woodworkers use daily reserved name ) can be prone to brush marks more we! Instead, it depends on a sanding block, or they will show through each coat! 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