It's all about efficiency Darran! Can't make thousands of them quickly if each one takes 9 hits
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I've been playing with these recently, and speaking to people like Milos and Jeremy the general consensus seems to be get it white and press, turn, press and you're done.
I suppose one major downside is that by the time you've got the bar white the socket is in danger of melting as its so thin. Balancing act I suppose, just like forging any heads.