We are planning an off season design project. It involves using a Bevel box (
http://www.andymark.com/product-p/am-2622.htm ) Unfortunately we need to use 1/2" Hex shafts as both shafts, and this gear box uses 3/8". (There use to be a 1/2 Hex version at Andymark, but it has been discontinued.)
My question is if it would be possible to broach these to 1/2 hex. Or alternatively, find a source for gears that would work with out broaching.