Started work on the new gear , the original is all 25mm thick cast iron . I could have made the new gear from steel of the same thickness but on refection that would be overkill and the cost of 25mm is a bit pricey ,plus bending it is more than I can handle .
So I settled on making the whole thing from 12 mm plate mainly because I had a 2 x 1 meter sheet to hand
Profiled out the main hex section on a cnc machine and folded a piece of 130 x 12 mm plate into a hex to make the center section tomorrow I shall weld it together
Then I will have to roll a cone at a 20 drg angle to weld the teeth to , That could be a bit of a problem as I have not formulated a plan of action yet
I might do it in 2 sections in my press