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Are you saying it doesn't get machined down on all surfaces? I can imagine there being less waste and higher yield on the more controlled process, but could you explain how the final product is any different?


Well if they do machine it then they're going to take off the hardened surface put on by forging. Maybe that doesn't matter for a pipe flange.

But that would also take a gigantic lathe, given the backyard nature of their forging setup I'd be interested to see how they do that.


They show the machining in stills at the end of the video. The also show that it meets the specs with high precision.




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