Start With What You Actually Need

Most people come to blacksmithing through a length of railway line clamped in a vice and a hammer. It works, up to a point. But a real anvil gives you three things at once: mass to oppose the hammer blow, a flat, hardened face to true up stock on, and a horn and hardy hole to bend and cut against. No other lump of metal in a home workshop does all three properly.

The good news is that you do not need a monster. What you need is the heaviest anvil your budget, your back and your floor can reasonably accommodate — and then to mount it well. Get those two things right and a 50 kg anvil will outwork a badly mounted 150 kg one all day long.

How Much Iron Is Enough?

Anvil weight is a matter of efficiency rather than strength. The mass absorbs the shock of your hammer, so the heavier the anvil, the more of your blow goes into moving hot metal instead of bouncing the whole arrangement around the shed.

• Under 25 kg: portable and cheap, but you will fight it. Fine for small scrollwork, chasing and jewellery-scale work; frustrating for anything larger.
• 40–70 kg: the sweet spot for a modest home forge. Heavy enough to work 12 mm bar comfortably, light enough for two people to shift on a sack barrow.
• 80–120 kg and above: genuinely lovely to work on, if you have the space and the floor to take it. Buy it if you can move it.

Older British anvils are often stamped in hundredweight, quarters and pounds — a three-figure mark such as 1-2-14 means one hundredweight, two quarters and fourteen pounds, roughly 83 kg. Worth learning before you go to view one.

Reading the Face Before You Hand Over Money

The face is where the anvil earns its keep, and it is where the money goes. A worn face is not automatically a deal-breaker, but you should know exactly what you are buying.

• Swayback: a dip worn across the middle of the face. Very common on old anvils. A shallow dip is workable; a deep one means you cannot flatten stock accurately.
• Chipped edges: small, localised chips are fine and can be dressed with an angle grinder. Long, crumbling edges on both sides suggest a hard life.
• Cracks and delamination: walk away. If the steel face is separating from the wrought-iron body, no amount of welding will make it reliable.
• Bad repairs: heavy weld beads laid across the face are usually harder than the surrounding metal and will chip your hammer. Judge them carefully.

Take a ball pein hammer to any viewing. A crisp rebound and a clear ring suggest a sound, hardened face. A dull thud, or a hammer that simply stops dead, points to soft cast iron or a dead, damaged face.

Features Worth Having

• Horn: for drawing out, bending curves and forming rings. A long conical horn is more useful than a stubby one.
• Hardy hole: takes a hardy, a hot cut and a whole family of bottom tools. Essential, in my view.
• Pritchel hole: a smaller round hole for punching through. Handy rather than vital.
• Step or shelf: a lower ledge near the horn for cutting on without risking the main face.
• Face length: 25–30 cm is comfortable for most home work; anything longer is a luxury.

Mounting It on a Stump

Set the top of the anvil at the height of your knuckles when you stand relaxed with a loosely closed fist — usually somewhere between 60 and 75 cm. Too high and you lose the power of your shoulder; too low and your back pays for it by the end of the afternoon.

A hardwood stump is traditional for good reason: it is cheap, it absorbs noise and it stays put. Elm and ash are ideal; oak tends to split. Laminated softwood blocks screwed together work perfectly well, and a builder's bucket packed with damp sand, sitting inside a larger bucket, is a surprisingly effective budget option.

Sit the anvil on a thin bed of silicone sealant or a scrap of lead sheet to kill the ring, and hold it down with chain and a turnbuckle, or a pair of U-brackets over the feet. Snug, not savagely tight. Avoid steel stands — they amplify the ring to a level your neighbours will not forgive.

Buying Used Without Getting Caught Out

Farm sales, house clearances and tool auctions remain the best hunting grounds, and patience pays. Expect to pay a fair price for a sound 50 kg English anvil; anything dramatically cheap usually has a reason.

Be wary of modern cast-iron "anvil-shaped objects" sold as starter kits. They dent under a hammer, offer no rebound and will teach you bad habits that take months to unlearn. A rough but sound old anvil beats a shiny new imitation every single time. Buy once, mount it properly, and it will comfortably outlast you.