I had to use a dowel to fill in a bad hole in a wing mounting block. After tapping the hole and applying thin CA I wasn’t satisfied with the quality of the threads and would like to beef them up a bit. I thought of several ways to do this such as:

Apply a thin coat of epoxy to the threads and re-tap
Apply a small amount of wood filler, let dry and then soak with thin CA and re-tap
Mix fine saw dust and CA or epoxy into a paste and then re-tap

It doesn’t seem necessary to drill out the block and put a new dowel in, ideas?