Case 446 transplant
Posted June 23, 2012 - 12:22 AM
I know of a man that used to make his own chambering reamers for firearms using this method:
Get a piece of hardenable steel and turn to the desired taper.
Carefully grind off one half of the piece so you have the desired taper in profile. If you do it carefully enough, the flat side where it was ground off will act as a cutting edge and could be used (with plenty of oil) to put a taper into a straight hole.
Another possibility would be to get an old tap of the right diameter and grind a taper into it... the flutes would tend to act as cutting edges...
Posted July 26, 2013 - 04:23 PM
Been a long time since I visited this thread. If Bulldogbones is still out there how about an update on this project. Case Ingersoll fans (like my self) would like to see the end results and hear your assement regarding the performance of your project.