I’m not going to lie I usually pass on these kinds of videos because they are sometimes ridiculous but this is pretty smart and I’m going to use it, I have a bunch of old jigsaw blades and I use dowels all the time repairing guitars and furniture. This is great because you can run the drill index in dowel sizes. Nice job man! Just something i noticed. The blades you put in were facing the same direction. So when you put a rotation on the wooden dowel, only 1 blade is actually cutting. If you made the blades both face opposite difections(as in the cutting sides towards eachother. Then when you rotate make sure the rod rotates the same direction as the cutting teeth.