I needed to end drill some 5/32" dowels for my miniature points but I don't have a lot of tools except a hand drill so I made this jig to center the dowel and support it so it doesn't split when drilling. I am sure it would work with larger dowels if needed
The longer piece of brass has a 5/32" inner diameter to fit the dowel shaft the smaller pieces are telescoping tubing glued inside one another to center the drill bit inside a 5/32 outer diameter final measurement tube. The shaft goes in the larger tube as does the drill bit and the tubes keep everythign in alignment for drilling