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It’s a ‘USA’ bmx bb shell.
Spent the evening with Matt of Rothair getting some fillet lessons.
He uses acetylene so hopefully what he’s taught me will transfer over to oxy-propane alright but the way he showed me to lay down a fillet is like night and day with what I’ve been doing! Can hopefully give it a blast tomorrow evening and see.
M_V
Does the A'ha have an eccentric BB shell or is it just a one-piece BMX BB?
Fascinating projects as always. Can't wait to see how the Surly turns out.