01Fold
Two steels.
One billet.
We stack bright 15N20 nickel steel between plates of 1095 high-carbon, forge-weld the stack at 1,260 °C, then cut it, restack it and weld it again — nine times, until one bar holds 512 layers and a pattern no one could plan.
Welding heat · 1,260 °C / Flux · anhydrous borax
02Forge
Strike at orange.
Never at red.
Steel moves like cold clay at 1,100 °C and cracks below cherry, so we hammer only while it glows. Roughly four hundred blows draw the bar into a blade, set the bevels and bring the point.
Try it: click to strike the hot spot
03Quench
One second
in warm brine.
At 800 °C the blade goes point-first into brine held at 50 °C. The edge freezes into hard martensite; the spine stays springy. It is the most frightening second of the month — a hidden flaw shows itself here, or never.
The trough is waiting. Keep scrolling.
04Polish
Nine stones.
Then acid.
Three days on waterstones from 120 to 8,000 grit, by hand, along the length. Then a bath of ferric chloride eats the carbon layers dark and leaves the nickel bright — and the pattern the hammer made finally surfaces.
Finished blades hang on the north wall