One of my Lablond lathes came with a short chuck key that looked like it had been left in the chuck when the lathe had been turned on.
I simply hadn't taken the time to make a new one, but yesterday I finally got fed up with it since when using the 4 jaw if I had to widen the jaws out very far the key was a bother to use
I grabbed a couple pieces of rod then being too lazy to set up the mill I just ground and filed the square key portion in 1 of the pieces then welded them together. Stupidly simple to make these things but a little time consuming non the less.
As you can see the old one has seen better days
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