Yesterday, I bought a Rockwell model #21-100 milling machine, from a ASME boiler contractor, I've dealt with for the past 40+ years. The mill is a small knee mill, has a 6-1/2" x 24" table, a R8 spindle, 5 speeds. It originally came out of a vocation school, where it sat basically unused, for about 30 years, except for a few class demos, it was ...