Re: Looking for a keyed sprocket
 

These steel sprockets are made by Grizzly with hardened teeth. I've used them with good success. They are only $2 because they are a surplused item.

I'm sure having a broach set will come in handy though.

-Ted
#1348
JFK HS, Denver, CO

Re: Looking for a keyed sprocket
 

To accomplish without a broach insert a steel shaft in the hole - center punch and then drill a 1/8" hole - insert a steel pin and voila' keyed shaft that holds as well as square - we have used this technique successfully. I pulled it off of a machinist forum a few years back.