Drill Bits, the more the merrier. Drill Bits can get expensive, so I wanted to attempt to make one.
Step 1: Materials
Drill with stone bit
Rod (Mine was left over from a project)
You don't need the saw, but you will need a way to get you rod smaller.
Step 2: Sizing
I used a lot of muscle and pliers to get the drill bit to size.
I would make the drill bit long, so you can drill a hole in a piece of wood without it getting stuck.
Step 3: Grinding Down
Use your stone bit to grind down one end of the rod.
Step 4: Test
Try it out, hope it works!