Quote:
Originally Posted by Qbranch
While it's true you can't really make a very good keyway on a mill, you may be able to make a hex or D-shaft bore on the mill. 1/8" end mills are available up to about 3/4" in length, so you should be able to mill a hex shaft bore out of the block.
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You could also drill a 1/8" hole first (offset it the right amount from center) and
then bore the center hole. Lot easier than using end-mills!