20 Nov. 2003|
Finish wood polyurethane varnish,woodworking company name ideas,plans for a table saw extension,furniture plans for beginners - For Begninners
Getting a smooth, blemish-free finish with oil-based polyurethane is within your grasp if you follow the steps in this article.
One key to a good finish is a smooth surface, because your finish will only be as smooth as your wood Sand your project with progressively finer grits of sandpaper. 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). Within 24 hours of applying your seal coat, brush on a coat of finish right from the can. A friend of mine, known for nice work but rough finishes, does his finish work in his dusty shop. Exploded-tip synthetic brushes (each strand is divided into multiple strands at the tip) may introduce air bubbles into the finish.
Sanding, planing, and scraping can help eliminate surface imperfections by softening and smoothing the wood.
If you choose a waterborne product, the process for achieving a smooth finish is basically the same.
If the finish is still a bit cloudy, apply more automotive polishing compound using the same method. Processes to alter the wood’s color and aesthetic are often applied before the finish, including staining and bleaching. Create a finishing room, or at least thoroughly clean your shop or garage of sawdust before you start. By comparing specific application requirements with various finish traits, the right coating can be selected.
Some common types of clear finish and their distinguishing characteristics are discussed below.
Conversion varnish, however, can only be applied in shops using specialized spray equipment and is hard to remove. Additionally, it works well on products that are exposed to UV and is safer to use than traditional polyurethane varnish.
To remove oil finishes, the substrate must be sanded down because oil absorbs into the wood.