Quote:
Originally Posted by Alan Ing
I already broached a 7/16" hex in some aluminum for fun and it was surprisingly a lot easier than I thought it would be. Next week I'll try a 1/2" hex and report back if anyone is interested. The only thing I don't like, is that rotary broaches are a bit oversized. A 1/2" hex broach is actually .505" this is to account for wear, but for $10 more you can have them grind a broach to .500" if you can wait a couple of days. We will just cut our hex shafts a bit larger.
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Alan,
This is great info. Would love to hear more about your results. We're just about ready to pull the trigger on a Somma rotary broach for our mill so we can do everything in the machine in one operation and eliminate all secondary processing.. Good to know that custom sizes are only $10 more-that's less than I was expecting.