Excellent work, very, very nice knife. I love to see the original file edges left in.
Ive often toyed with the idea of making a razor from a file without the hardening step but maybe locally anneal tang to get the hole in??
Theoreticaly this should be possible but may need to go into the oven for an hour or two to draw back the hardness??
Great work, keep it up. Have you had a go at making a razor?