oops, sorry guys
... it was just a figure of speech. what i meant was i don't have a clue on the science on how twistcores were made.
What I am talking about is 2 rows of twistcore, one on either side of the plain middle ridge
ok, that makes a lot of sense. i keep thinking it was a singular twistcore rod and somehow the ridge was purposely formed in the middle during the smelting process. on what i've seen on other twistcores, the middle part of the blade is flat...