Longer Bolt Hammer Handle

I really liked the source I remixed from, but couldn't get much leverage with the shorter handle. So extended it, and to compensate for the extra length, I added a hole down the middle for adding some all round and a spot to bolt the it into the handle base. hopefully that might compensate for the extra inertia and add some strength to the longer handle.

I also sharpened the bolt on the non-carriage head side to give it a second purpose.