Wrought (!) and cast iron cannon balls, 16th century

[Matchlock]

Originally Posted by Jim McDougall

Thanks so much Fernando. I hadnt reread (obviously but appreciate the direction. It is hard to realize the difficulty in producing these, but when reviewing the dynamics and 'technology' at hand it becomes understandable.
So basically, though unmarked, only these two makers were producing at this time so other subtle characteristics must lead to differentiation.

Best,
Jim

Hi Jim,

I should like to point out the obviously visible main difference between cast and wrought iron in that cast iron items usually have a relatively regular and porous surface and, when 500 years old, tend to losses, while wrought iron has a quite irregular but smooth surface, and the traces of the hammering process can be identified. As the iron is much harder and very compact, it will grow less rust and is more stable.

I repost my sample by Peter Pögl, 1490's, for easier comparison.

Just imagine the tremendous amount of muscular toil when three or four smiths had to hammer a white or red hot iron lump to a more or less round shape ...

Best,
Michael