Here are a series of Youtube videos (and a few stills) showing the progress I made from a simple sample block of tooling board (courtesy of the nice folks at PrecisionBoard.com ) to a grav tank turret that is pretty close to being thrown into a mold.
Just so you know, these are loud videos of machining operations, so you probably want to mute them.
I'll also give you short attention span types the finished result up front, then explore the details farther down...
So, onward we go into the process...
Roughing Pass is done. The finish, is, well...rough. So, we change out bits, and start the finish pass.
I think I'm on to something, here. Pretty cool.