FYI - A fellow over on the Home Shop Machinist forum just made another small run of phenolic 7" AMMCO shaper bull gears. I'm not sure if he's on this forum, but he is over there under the handle "partsproduction". These bull gears are intentionally designed as the weak link in case the ram hits an immovable object, the inexpensive (back in its day) bull gear could be easily replaced. The gear on my AMMCO is in good shape, but I bought one as a spare...just in case.
Just sharing, I have no connection.
Just sharing, I have no connection.