The end result is the same polyurethane finish you get with a brush, but much thinner. Dampen a lint-free rag with mineral spirits and wipe the surface of the wood clean. I have fallen in love with this stuff. It doesn't  always work, but it usually does a fair to fantastic job. When sanding a coat of polyurethane before adding another coat, a fine white dust should form. You can put on many coats and get the same durability as a brush on. Place the project in a well-ventilated area. You also want to do the back and underneath sides of all the pieces, this way the board absorbs varying humidity levels evenly and reduces the chance to … Sand the Surface. Spray less accessible areas with aerosol polyurethane. You need to use the right brush and it takes a little practice to get the technique right. Apply the poly by wiping it onto the wood in smooth, even strokes. If you have a very light hot cup mark in a table, first test to see if it is a lacquer finish that can be totally repaired with "furnisher refinisher" -- but if it is a plastic finish, take "00" steel wool wetted with Wipe-On-Poly and very gently use the steel wool to remove just a fraction of the discoloured finish. So the process is basically this. © Copyright 2020 Hearst Communications, Inc. You can literally dab it into cracks and then wipe the excess right off. How to Refinish Hardwood With Mildew Stains. Steve Hamilton has been writing professionally since 1983. Brushing a rounded, contoured or vertical surface is more likely to create drips. Remove the dust with a tack rag or vacuum. A remodeling and repair specialist with over 20 years experience, he is also a Certified Pool Operator and holds an EPA Universal refrigerant certification. The Steps to Applying Polyurethane 1. Overlap each stroke slightly to ensure complete coverage. Allow the finish to dry, then sand and clean the wood as before. Try for a thin, consistent coat over the entire project. Apply the first coat of polyurethane using the best technique for the surface. On day one, I take a rag and I apply a coat everywhere on the furniture. While this wood finish is favored for the tough, durable film of protection it provides, that same film is frequently criticized as looking too much like a plastic coating. Don't sand woods such as pine or maple using too fine a sandpaper, especially if you intend to use a pigmented stain. You would have to put a lot of coats on to make it strong enough to walk on or use on a serious wear surface, but for non-wear surfaces it is great. If not, or if the sandpaper turns gummy, the previous coat needs more time to dry. It is simply a clear polyurethane finish, but formulated to not gum up when applied with a rag. Flatten them out and spread them to dry in a safe, well-ventilated area before throwing them away. Sand the wood lightly with 320-grit sandpaper. Fortunately, you can avoid many of poly's shortcomings by following the proper steps to apply a wipe-on version of the product. If you want to just put a very light refresher coat over a regular poly finish, it will pick up those little scratches and smooth the finish out with much less work that a brush coat that you have to be so careful with. To give a more natural appearance to the wood, choose satin or semigloss polyurethane. Work one section at a time, such as the top of a table or one side of a cabinet. Always test any finishing method on scrap wood before using it on your project. Now I do have one complaint about the product. Dip your rag into the finish, squeeze out the excess and wipe on. As with any varnish, polyurethane can also be tricky to apply, with brush strokes and bubbles being common complaints.