I am in the process of making a box joint jig. The fingers fit together VERY tightly. My question is how tight should they be? My fingers are measuring .499 and my slots are almost exactly .500. Any advice is appreciated.
I'm using red oak for my test pieces. After some more fine tuning I can now put them together without hitting them with a hammer but they are still tight. I'll try it with some glue on it and see if they still go together.
I glued the simple little box together. It was pretty tight after applying the glue but it went together fairly well. I will probably make another adjustment to it before using it again.