Guys still working on my lathe and I have two cast iron hand wheels that needs new keyways.Both I believe is maybe 1/8 or 3/16,the old keyways are just wore out from being loose over time.I have never seen a broaching set which means again I'm clueless.So I believe that a set would only be every once in awhile probably used in cast iron and just mild steel I guess,so what would be a decent set to have that's not over the top but maybe on lower end of middle of the road My first place to start looking is on ebay and go from there to get an ideal what a set would cost used/new. If possible could anyone shed some light on this please?