These cutters are used to machine a flat bottomed relief or socket, which will accept the tapered tone hole or raised tone hole chimney. A set consists of 11 cutters and 33 brass pilots. The cutters are made from tool steel, hardened for maximum durability. The large variety of brass pilots included make a good tight fit possible in any diameter tone hole. They center the cutter with the hole and help guide the cutter in for a straight reveal. The two flute design of the cutters, along with the brass eliminate all chatter that occasionally occurs with a fly cutter. Cutters run in size from 13/32” (10.3mm) thru 23/32” (18.3mm) in 1/32” (.8mm) steps. Set comes complete with a divided box which keeps the cutting edges from becoming damaged and keeps pilots from becoming lost.
This tool is for a trained, repair technician. No instructions are included.