This looks like a pretty good idea:
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What I like best is that you don't have to thread the bit through 2 holes when replacing it. Just slap it in the slot.
I'd want one for 1/16 to 1/2 by 64ths & I could make one like that. But before I do, has anyone used one & are there disadvantages that I don't see? I.e., that make it less convenient than it looks.
Thanks, Bob