Originally Posted by
Positron400
I think I might've not properly explained what I would have liked to know. Allow me to clarify: The purpose of my question was not to modify a frame to accepted nutted calipers, but modify recessed calipers with a different nutted screw to make them fit on older type frames which were not built for recessed mounting.
Understood. The other methods offered were just because you might not be able to do what you wish or realize that there are alternatives.
My last suggestion was an alternate way to modify the calipers and leave the frame intact.