Hammers & Anvils · Shape

Anvil

The anvil is the mass that the hammer works against, turning the energy of a blow into moving metal. Mass, face hardness, and rebound determine how well it performs, and its height sets how comfortably you can forge.

3D PREVIEWStageShapeRank#2

Specifications

At a glance
Mass	70–150 kg typical
Face	Hardened steel, 50–58 HRC
Features	Horn, step, hardy, pritchel
Rebound	70–90 % ball bearing test
Height	Face at knuckle height
Mounting	Stand or stump, damped

Technical parameters

Typical values for this class of tool
Face hardness	50–58 HRC
Rebound	70–90 %
Hardy hole	20–30 mm square
Pritchel hole	10–15 mm round
Face length	250–400 mm
Horn length	150–250 mm
Waist ratio	Face to base, tapered
Mass range	20–300 kg

Hammers & AnvilsBeginner$$$ typical cost

Overview

The anvil is the mass that the hammer works against. When you strike hot steel on an anvil, the inertia and weight of the block resist the blow, so the energy goes into moving metal instead of bouncing the hammer back. A good anvil has a hardened steel face, a horn for bending and drawing, a step or cutting table, and a hardy hole for holding tools. Mass is the single most important property: a heavy anvil absorbs the blow and returns it, while a light one dances and rings and wastes your effort.

When choosing, weigh mass, face hardness, and rebound. An anvil of 70 to 150 kilograms suits most blade work; heavier is better if you can afford and move it. Rebound, the height a ball bearing bounces back off the face, is the quick field test: 70 to 90 percent of the drop height indicates a hard, lively face, while a dead thud suggests a soft or badly repaired one. Cast steel anvils are tough and uniform, forged steel anvils are prized for rebound, and antique wrought-iron anvils with a steel face can be excellent if the face is intact.

In the workflow the anvil is the center of the shaping stage. Everything you forge happens on its face, horn, or in its hardy hole, and its height matters as much as its mass: the face should sit at roughly knuckle height so your hammer lands flat. Ring is a trade-off. A loud anvil tells you the face is hard, but it also damages your hearing over years, so many smiths chain or magnet-damp the anvil to quiet it. Mount it solidly and it becomes the foundation of every forged blade you make.

Where it fits

This tool belongs to the Shape stage of the build.

ForgeShapeGrindHeat TreatFinish

Safety

Before you use thisRead the manufacturer’s instructions. The points below are the hazards that come up most often with this class of tool.

Never strike a cold anvil face with a hardened hammer, since both can chip and throw steel fragments at high speed.
Set the anvil on a stable stand and damp the ring, because a tipping anvil and long-term hearing damage are both real risks.
Wear safety glasses and keep feet clear of the base; a dropped hammer or a toppling anvil causes serious foot and leg injuries.

Using it well

Test rebound with a ball bearing dropped from a fixed height; a lively 70–90 percent bounce means a hard, usable face.
Set the face at knuckle height and mount the anvil on a heavy stand, then damp the ring with a chain or magnet.
Work hot steel only; hammering cold or near-cold steel on a hardened face risks chipping both the steel and the anvil.
Keep the face free of deep dents and the edges lightly rounded, since sharp edges and pits transfer marks straight into your work.

Compatible steels

Steels this tool is commonly used with, and which suit its working range.

1084 1095 5160 80CrV2 15N20 W2 52100

Related processes

ForgingNormalizingProfilingFinishing

Educational reference. Forge & Anvil is an independent information resource and does not sell tools, steel or knives. Specifications and temperature ranges quoted here are typical values for the category of tool described and vary between manufacturers — always work from the documentation supplied with your own equipment. Nothing here is professional safety, legal or engineering advice.