I've been looking for a tool with carbide to cut "V" shaped grooves into D-2. The parts are 8" dia. x 3/4" thick with a 4" hole in the center. I stack 5 of these up on a spindle with a gear and a pawl for indexing. I then mill a hundred or so groves about 1/16" wide and deep. The cutter and part is like this: " O< " These parts are rotary knives for cutting tempered steel wire. The grooves act to feed the wire and control the cut rate. I have always used a 3" HSS 45 deg. cutter for about $20 ea. but I end up burning up 4 or 5 of them even at reasonably slow speed and feed and flood coolant.
I can't seem to find a cutter that will hold inserts like this: " " I believe that carbide will be cheaper and much faster, it's like watching grass grow. Any ideas?