Thanx Stew, I work with two other fellows, The older one (71 ,Howie) has been making steam trains for 20+ yrs and is showing us the ropes, I CAd and CNC mill parts, the other guy a bit younger ( 25 , Justin ) than me does the manual machining and runs teh CNC lathe, its 7 1/2, we are also doin a 7 1/4 it will be a Hudson I think tho.