This universal cutting frame is designed to fit in the 5/8" boring bar tool holder of a quick change tool post commonly used on metal lathes. The cutter head holds a 3/16" round HSS cutting tool and can cut a radius of from 0.6" to 1.6". It has a 1" adjusment for it's drive belt length. All bearings are ball bearings. It can cut over 4" deep into a hollow vessel. The design is modular so that multiple cutting heads and arms can be used for other size cutters.

A 7/16" radius boring bar cutter in a router was used on the Rose Engine to cut the pattern on the aluminum pulleys.