Blacksmithing Glossary for Beginners
Quick answer
A plain-language glossary of about 40 blacksmithing terms every beginner runs into, from anneal and ASO to tuyere and upset. Each entry gets a one-line definition, grouped alphabetically, so you can look up a word fast while reading a tutorial or shopping for tools. Deeper terms link out to full reference pages on anvil parts, hammers, and forging temperatures.
A Beginner's Blacksmithing Glossary
Every craft has its own language, and blacksmithing borrows from centuries of shop talk across farriers, bladesmiths, and ornamental workers. When you read a build thread or watch a demo and someone says to upset the tang or normalize before you quench, it helps to know exactly what they mean before you spend money or ruin a heat.
Below are about 40 of the terms a beginner runs into first, listed alphabetically with a plain one-line definition each. When a single line is not enough, a few point out to deeper pages - like the full anvil parts and terminology breakdown for the words that name the anvil itself.
| Term | Definition |
|---|---|
| Anneal | Soften steel by heating then cooling slowly (in ash or vermiculite) so it is easy to file, drill, or bend. |
| Anvil | The hardened work surface you forge on; main parts are the horn, face, hardy hole, and pritchel hole. |
| ASO | Anvil-shaped object: a soft cast-iron casting shaped like an anvil but with weak rebound that dents easily. |
| Bick | The horn of an anvil, or the slim cone of a bick iron; used for bending curves and drawing out. |
| Bloom | A spongy mass of iron and slag pulled from a smelting furnace - the raw output of early ironmaking. |
| Borax | Common forge-welding flux; it melts into a glassy coat that keeps scale off the surfaces so they can weld. |
| Coal | Solid forge fuel; low-sulfur bituminous smithing coal cokes well and burns hot. |
| Coke | Coal baked off of its volatile gases; burns hot and clean and is a favored solid forge fuel. |
| Damascus | Pattern-welded steel made by forge-welding layers of steel and folding them for a visible pattern. |
| Dragon's breath | The flame that rolls out of the forge opening - normal on propane, but a reminder to keep ventilation up. |
| Draw out | Lengthen and thin stock by hammering, moving metal along its length. |
| Drift | A tapered tool driven through a punched hole to enlarge and shape it (square, round, or hammer-eye). |
| Flatter | A flat-faced top tool struck with a hammer to smooth and true a surface. |
| Flux | A material (usually borax) that shields hot steel from oxygen so a forge weld can take. |
| Forge weld | Joining two pieces of hot steel into one by hammering them together at welding heat. |
| Fuller | A rounded top, bottom, or hand tool used to spread metal, isolate material, or start a shoulder. |
| Hardy hole | The square hole in the anvil face that holds bottom tools by their shank. |
| Hardy tool | A bottom tool with a square shank that seats in the hardy hole (hot cut, fuller, bending fork). |
| Heat treat | The controlled cycle of hardening then tempering that sets a blade's final hardness and toughness. |
| Hot cut | A hardy chisel used to cut hot stock to length on the anvil. |
| Mandrel | A shaped form, often a cone, that you forge metal around to make rings and curves. |
| Mild steel | Low-carbon steel (about 1018 or A36); cheap and forgiving but it will not harden by quenching. |
| Mill scale | The bluish-gray oxide skin left on hot-rolled steel from the mill. |
| Term | Definition |
|---|---|
| Normalize | Heat to critical then air-cool to refine and even the grain; done before hardening a blade. |
| Patina | A stable surface color or oxide layer, often encouraged for looks or mild rust resistance. |
| Peen | The hammer end opposite the face (cross, straight, or ball); also the act of spreading metal with it. |
| Pritchel hole | The round hole in the anvil face for punching through stock and holding round-shank tools. |
| Punch | A tool driven into hot steel to start or make a hole, or to mark the surface. |
| Quench | Rapid cooling in oil, water, or brine that hardens carbon steel. |
| Rebound | How high a dropped ball bearing bounces off the anvil face; 70% or more signals a good, hard face. |
| Rivet | A metal pin upset on both ends to fasten parts together permanently. |
| Scale | Flaky oxide that forms on steel at forging heat and flies off under the hammer. |
| Scroll | A decorative rolled curl at the end of a bar - a staple of ornamental ironwork. |
| Slack tub | The tub of water by the forge for cooling tools, quenching, and cooling parts of the work. |
| Swage | A shaped tool or block used to form stock to a profile such as round or hex; also the act of doing so. |
| Tang | The narrow rear extension of a blade that runs into the handle. |
| Temper | Reheating hardened steel low (about 375-450F / 190-230C for knife edges) to trade hardness for toughness. |
| Tongs | Hand-held pliers for gripping hot stock; jaw shapes are matched to the stock you hold. |
| Tuyere | The air inlet or port that feeds a solid-fuel forge fire, usually from below. |
| Upset | Shorten and thicken stock by hammering on its end - the opposite of drawing out. |
How These Terms Connect
Most of these words describe one of four things - heating, shaping, joining, or heat treating - and they chain together in a real project.
You build a fire (coal, coke, or propane) and bring the steel to a working heat. Then you shape it: draw out to make stock longer and thinner, upset to make it shorter and thicker, use a fuller to spread or isolate metal, and drift or punch to open holes. To join two parts you either rivet them cold or forge weld them at welding heat with borax flux - the forge welding guide walks through how the flux actually does its job.
Bladework adds a second chain: normalize to refine the grain, quench to harden, then temper to toughen. Getting those heats right is most of the battle, which is why the heat treating guide and a temperature reference matter so much. Bottom tools that live in the hardy hole - fullers, hot cuts, bending forks - are broken down in the hardy tools explainer.
Frequently asked questions
What is an ASO in blacksmithing?
ASO stands for anvil-shaped object. It is a cheap cast-iron casting that looks like an anvil but is too soft to work on - the face dents, and a dropped ball bearing barely bounces instead of returning 70% or more. Beginners often buy one by accident. Check rebound and hardness before you spend money, because a real steel-faced anvil will outlast dozens of ASOs.
What is the difference between annealing and normalizing?
Both soften and settle steel, but the cooling speed differs. Annealing cools very slowly, often buried in ash or vermiculite, to make steel as soft and machinable as possible. Normalizing heats to critical then cools in still air, which refines and evens the grain without making the steel dead soft. Bladesmiths usually normalize a few times before hardening; annealing is more about easy filing and drilling.
Do I need to memorize all these blacksmithing terms to start?
No. You can forge your first hooks and hardware knowing only a handful - draw out, upset, quench, and temper cover a lot of early projects. Treat this glossary as a lookup you return to when a tutorial uses a word you do not recognize. The vocabulary sticks naturally as you spend time at the anvil, so start hammering and let the terms fill in over time.
Is it spelled hardy or hardie?
Both spellings are common and mean the same thing: the square hole in the anvil and the square-shanked tools that seat in it. American suppliers lean toward hardy, while some older and British texts use hardie. Do not read anything into which one a smith uses - it is a spelling preference, not a different tool. The same goes for horn versus bick or beak.
What is dragon's breath, and is it dangerous?
Dragon's breath is the flame that licks out of a propane forge's openings, especially with a rich or well-fed fire. On its own it is normal and even useful for judging the burn. The real hazard is invisible: propane forges make carbon monoxide, so you must run them outdoors or with strong cross ventilation and a CO detector nearby. Keep hair, sleeves, and anything flammable clear of the flame.
Last verified 2026-06. Specs, sizes and market prices change - confirm details on the retailer page before buying.