Jim Thanks for the information. Certainly more food for thought. I think most of the jaw work can be done on conventional mills and lathe faceplate work, using some dedicated tooling to hold the parts for eccentric work. Some profile parts can be machined as "rings" and then cut in half, faced back to half moons with a face mill. Good swan necked dovetail groove boring tools will be paramount, not an problem to make from drill rod and then harden/temper. Anyway, I am going to give it a go this summer. it took me 5 years of continual work to build a working model steam tractor, this should be? a 1 year project? I think. ????
