I want to add my 2 cents to this thread. I picked up my wheel frame a few days ago but until lasts night hadn't had time to do anything with it. I worked out a deal with Peter to buy just the machined, unpainted casting thinking I'd make the machined components myself. So finally the point of this blurb: I was deburring an edge of one of the bores and the chips that the burring knife produced were long and curled more like steel chips and not crumbly like cast iron chips.
I know that Peter did destructive testing during the development of this machine and he finally arrived at a nodular casting that had the strength he was looking for. Years ago I worked for a company that made governors for big diesel engines. The standard product was common gray cast iron but the governors that we made for the military were made from nodular iron called ductile cast. These ductile castings were much tougher than the standard iron. This frame is that, nodular cast iron. Or to borrow a phrase from Per, Good Chit!
__________________
Bob
Don't believe everything you think.
|