19th-century blacksmithing secrets with Fort Larned's ranger

National Park Service · Music: juskiddink (CC BY)

How blacksmiths control expanding hot metal

Park ranger Pete Bethke explains how hot steel reacts to hammer strikes by spreading sideways and demonstrates how squaring and quarter-turning controls the taper.

The Physics of Hammering Hot Steel

How to keep delicate ironwork from burning in the forge

Pete demonstrates cooling a freshly made scroll in water so it does not burn off when reheating the thicker main body in the coal forge.

Why Blacksmiths Quench Finished Parts in Water

Pete shows the 19th-century hot-punching method, striking through the metal until it bottoms out on the anvil before cleanly punching the slug out.

How to Punch Holes in Iron Without Power Drills

Pete applies a traditional 50/50 mixture of beeswax and raw linseed oil to the hot metal, letting the wax penetrate open pores for corrosion protection.

The Historic Recipe for Sealing Hand-Forged Iron

[00:47] The Physics of Hammering Hot Steel
[01:43] Why Blacksmiths Quench Finished Parts in Water
[04:25] How to Punch Holes in Iron Without Power Drills
[07:07] The Historic Recipe for Sealing Hand-Forged Iron

19th-century blacksmithing secrets with Fort Larned's ranger

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