I am building this engine from the plans available here :- http://www.vapeuretmodelesavapeur.com/telechargements4/h-potty-mill-engine-09-02-08.pdf
and would like some advice as to how to machine this component
It is the crankshaft and would appear to be turned from a piece of flat bar 18mm wide by 6mm thick. I have both lathe and milling machine but I don't fancy turning the main part of the shaft due to the interrupted cut. Should I mark it out and mill away most of the excess or just go for it?
Any and all advice gratefully received.