end that extends slightly beyond the thick end of the cutter body. This is toward the end of the rifling head
to which the pull-rod is fastened.
The thin end of the tapered wedge is ground square on the end. The square end then sets against the
square-ended plug, which is backed by a spring. The spring is backed by the end of the pull-rod inside
the rifling head. In the bottom of the wedge a hole is drilled and tapped for a small screw. The head of
which fits the slot cut in the bottom of the rifling head.
The screw prevents the wedge from turning and is made from 01 tool steel, should be hardened to
prevent wear. The adjusting screw for the wedge has an unthreaded portion beyond the threaded part,
smaller than the threads. The end of this unthreaded portion is ground square and fits against the large
end of the adjusting wedge. When the adjusting screw is screwed forward in the rifling head, it moves
the tapered wedge forward and upward under the cutter, raising it as necessary.