Nicholson File Restoration
by Super User, 1 week ago.
I tried chemical sharpening with ferric chloride and It definitely made it feel sharper. The line near te tang after the ferric chloride soak is a thickness difference between the etched part and the original surface.
1:51 Sodium carbonate
2:07 12V power supply
2:55 Ferric chloride
3:26 Sodium bicarbonate (and water)
4:03 White mineral oil
Interesting video about Nicholson made by a fellow maker:
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