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Shear Steel: Blister Bars Faggoted and Welded, Ure 1839
Blister steel from the cementation furnace is uneven. Ure (1839) describes shear steel, named after the cloth shearers' shears made from it: four bars bound into a faggot with a fifth as a handle, welded under the hammer and drawn out. It polishes finer and is tougher and more even; too many heats turn it back towards iron.
The picture: our diagram of the faggot and the welded bar.
Advanced
A day
Instructions
1
1
Make the faggot
Make the faggot
Break the blister steel into four bars of equal length and lay them side by side with a fifth of double length whose end sticks out as a handle. Bind them tight with rings of iron rod.
Materials for this step:
Blister Steel Bars5 pieces
Wrought Iron Rod1 mTools needed:
Hot Cut Hardy
Cross Peen Hammer
Blacksmith Tongs
Welding Gloves
Safety Glasses2
2
Welding heat
Welding heat
Bring the faggot to a full welding heat in the forge, sprinkling it with fine sand so a film of slag protects the surface.
Materials for this step:
Fine Sand0.2 kg
Charcoal10 kgTools needed:
Blacksmith ForgeBlacksmith TongsWelding GlovesSafety Glasses3
3
Weld it
Weld it
On the anvil, strike it down on both sides at once, the striker with the sledge, until the bars have united. Knock off the rings at the next heat.
Tools needed:
Anvil
SledgehammerCross Peen HammerBlacksmith TongsWelding GlovesSafety Glasses4
4
Draw to a plate
Draw to a plate
Draw the welded bar out into a plate of even thickness, using as few heats as you can, and finish the faces with the flatter.
Tools needed:
Blacksmith ForgeAnvilSledgehammer
FlatterBlacksmith TongsWelding GlovesSafety Glasses5
5
Plate size
Plate size
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Materials
4- 5 piecesPlaceholder
- Placeholder
- 0.2 kgPlaceholder
- 10 kgPlaceholder
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