So in buying an MT3 ER32 collet chuck for my mill, I managed to miss the fact that the drawbar size was 1/2" 13tpi, not the 12tpi I need for my machine

Making up a new drawbar would be easy enough, but would make changing between the collet chuck and the drill chuck a real pain, so I'm wondering if I could re-tap the collet chuck to 1/2" 12tpi?

As to how, not really sure. I did think about drilling and boring out the existing thread, then pressing/loctiting/welding a solid piece in, somehow, then drill and tap. Again, somehow...


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