On Monday, October 6, 2014 12:19:03 PM UTC-7, Tim Wescott wrote:
I have a motor that has a keyed shaft, and I need to remove the key.

...It looks like the keyway was milled with an end
mill, and the key either glued or pressed into the keyway.

If all else fails, one could drill and tap the key (they're usually
soft enough), and pull it out with a slide hammer.