Nobody has super-tight fitting joints all the time, so when you run into this situation, there’s a quick fix for small gaps – and we’re not talking about the Samaria Gorge on the island of Crete or the Wiamea Canyon on the island of Kauai in Hawaii. Larger gaps, which for the most part should be non-existent, are best be filled in with pieces of matching wood. Select pieces that are close in color, and the grain should be aligned as best it can.
To many woodworkers this is a well-known fix, but I often meet those who are amazed at the way it works. Discussions often center on what is used to fill the gaps. Some suggest using shellac, but I’m a fan of ordinary yellow glue – or better yet, the glue you’re using to build your project.
All you do is smear glue into the gap, then sand the spot to bring up wood dust that fills the sticky opening. It’s easily demonstrated in the photos below. The opening photo is the result of all that hard work. (Remember that all photos enlarge if you click on them.)