Hey guys.
I just realized that my life would be so much easier with a product I make if I had a stacked drill bit. I have to do a stepped hole a lot and right now I use a CNC router, but I'm thinking more and more that going back to basics is a better idea.
The drill can be used on a press or on the lathe, as the parts are always turned afterwards.
I could buy three drill presses and do them assembly line style, but I believe there is a better way that I just haven't thought of (or don't know about) yet.
I don't need it to turn the outside also, but that would be pretty incredible. That would just be icing on the cake, and I almost considered not even mentioning it because I don't want that to detract from the important discussion of how to drill out the inside in a single go.
I don't mind making something if anyone has any ideas.
The parts are made of various exotic burls and hardwood. The bit needs to cut well. The bit is 1" diameter at the smallest and about 2.25" diameter at the largest (estimate).
Edit: I added a sketch of a quick idea of what the drill bit might look like.