There's an interesting story behind this blade. First it is a composite Damascus that started by stacking 7 pieces of 1/2" cable and band saw steel. After that billet was forged up alternating "V"s were cut in the the billet was flattened back out putting a wave in the pattern. Then I had an old file blank that was bought at a flea market in north Alabama, it was perfect for welding on as the edge. The file steel welded up fine but when I tried to forge the bevel in the steel started cracking from being too hot. I thought it odd as most knife steels haven't had that problem, not even 52100. I figured that what ever this file blank was it must be very high in carbon.
Well, a guy on FB posted a test of a older American made Nicholson "Black Diamond" half round file. It tested out at 1.59% carbon. It all started making sense. Years ago there was a Nicholson factory in North Alabama that shut down. Those blanks must have come from there.
Rule #10; "I can make that" translates to; "I'm to cheap to buy it new."