Corey and I have been using the Tormach CNC mill at Techshop SF to mill out some very big gears. These gears take about eight hours to mill and we need at least four (but we're probably going to make six). We've taken lots of time in figuring out a better (and maybe a little faster) way to make them. Did I mention there're big?
The square blanks at the top of the last image are for some internal gears we are also going to mill.
The square blanks at the top of the last image are for some internal gears we are also going to mill.