[nathan_hui]

Originally Posted by ksafin

Thanks for the help guys.

I've never used or even heard of a broach - what kind of equipment is necessary and how is the process done?

This is a good intro to broaching and keyways: https://www.youtube.com/watch?v=8tAz5YDFtAs

Basically, a broach is a multitoothed cutter that cuts a specific profile in a hole. To use it, you simply (well, not that simply) push it through the hole. You generally need a press to do this, and a specific one (if you want a good job) at that.