I have a bunch of stub reamers for use in the Logan bed turret. All have a hole through the shank, across on a diameter.
I found in an old machinist reference (from 1940) a comment that the hole was used in floating reamer holders. All I have been able to find has been speculation that the hole was a loose fit on a pin, so the combo of the loose fit, and sliding on the pin provided the "float".
So, is that the whole story?
Seems kinda crude, and liable to damage. Maybe it is better than I think.
Really just a curiosity issue, I have a floating holder for them.
I found in an old machinist reference (from 1940) a comment that the hole was used in floating reamer holders. All I have been able to find has been speculation that the hole was a loose fit on a pin, so the combo of the loose fit, and sliding on the pin provided the "float".
So, is that the whole story?
Seems kinda crude, and liable to damage. Maybe it is better than I think.
Really just a curiosity issue, I have a floating holder for them.