Did J&R ever make any multi line cutters in carbide? I have a couple of the single line carbide tools and really like them.
The only other multi line cut carbide checkering tools I can recall seeing were in the hands of a couple that used to checker for Winchester in the 40's.
Then went freelanse and did the work for about everyone in the Ct and MA gun industry. They worked right up through the 70's at it.
They told me the tools they had were designed and made for them by Winchester.,,even had a set of the drawings for them as they could see a need in the future for other sets of them. Even carbide wears out.
The tools were large faced things probably 5/8" sq and gently radiused from side to side. You used both hands on the long handle. They did M12 and M21 patterns in a matter of a few minutes. Piece work and that's how they made their living.
