Tip: The Shim Fix for the Small Gaps in a Mitered Corner
If anything sets me off in the shop, it is miscutting or bumbling a miter. Too often I don’t have the material or patience to remake a part. Or, an effort to grain match just cracked up. There are a lot of solutions: Glue and sawdust, burnishing with a screwdriver, or try wood putty. I’m certain shimming a gap is not new. But, it works. Cut a thin strip. Hand sand it to thickness. Dot some glue on it and tap it in place. Carefully clean up any squeeze-out. When the glue dries the rest is finesse. A rat tail file, Dremel, or a sandpaper wrapped dowel can be used to level the shim. (See photos below.) Hope this helps!