Choosing Your Steel and What to Avoid

Almost any piece of mild steel bar will make a serviceable fire poker, and the best source is usually something already lying about. An old garden fork tine, a length of gate bar, a broken rake shaft, a coil spring from a car suspension, or a scrap of 12–16mm round bar all work well. Aim for something roughly 450–500mm long and at least 10mm in diameter at the handle end. Anything much thinner will feel whippy when you are trying to drag a heavy log forward.

There are two materials to leave alone. Galvanised steel gives off toxic zinc fumes when heated, so plated scrap is not worth the risk unless you have stripped the coating completely. Painted or chrome-plated bar is equally unpleasant to work. If you are using a spring or another high-carbon piece, bear in mind it will harden if quenched and can turn brittle — handle it differently from mild steel, as described below.

You will need a forge or a solid-fuel brazier, something heavy and flat to hammer on, tongs, a hammer of around 800g to 1kg, a wire brush, and a quench bucket. Safety glasses and ear defenders are not optional. Hot steel looks much the same as cold steel in poor light, so always confirm with a water spray or by holding your hand near before you reach for anything.

Straightening and Cutting to Length

Scrap is rarely straight, and every kink is a weak point where the finished tool will bend under load. Bring the whole length to a bright orange heat, lay it on the anvil, and work out the bends with light, glancing blows along the high side. Sight down the bar after each heat. Straightening is patient work, but it pays off later.

Once the bar runs true, cut it to length. A good working proportion is around 450mm overall: 100–120mm for the handle, roughly 250mm of straight shank, and 60–80mm reserved for the hook and point. Mark the sections with a punch or a dab of soapstone so you do not lose track once the steel is glowing.

Drawing Out the Point

Take the working end to a bright orange and begin drawing it out. Rather than hammering one spot, work in overlapping passes: strike, rotate a quarter turn, strike again, then move along the taper. This keeps the section round and prevents flats or a fishtail forming.

Draw the taper over the last 60–70mm, finishing at around 3–4mm. Resist the urge to make it needle-sharp. A fine point simply vanishes into ash and gets damaged in use, whereas a slightly blunted tip drives between coals cleanly and lasts for years. If you fancy a decorative touch, a small flattened leaf or a short scroll at the tip looks well, but keep it modest — this is a tool, not an ornament.

Turning the Hook

The hook is what makes the poker genuinely useful, so give it a deliberate shape. Heat the final 80mm and bend it around the horn of the anvil or a suitable round bar, working in small increments rather than one heavy heave. You want a gentle quarter circle that opens back towards the shank, so the tip can hook behind a log and pull it forward.

Test the geometry before you commit. Lay the poker down: the hook should sit flat, with the tip pointing back towards the handle and a gap of 30–40mm between tip and shank. Too tight and it will not grip; too open and logs slip straight out.

Twisting the Handle

A twist does more than look handsome. It thickens the handle slightly under the hand, gives grip when the poker is cold, and adds a little rigidity to the section you will actually hold.

• Heat a 100–120mm section behind the hook end to an even bright orange right through the bar — a patchy heat twists unevenly.
• Grip one end in the vice and the other with a twisting wrench or stout locking pliers.
• Turn steadily, counting rotations. Four to six full turns over 100mm gives a crisp, regular spiral.
• Keep the heat in the steel as you turn; if it starts to dull, stop and reheat rather than forcing it.
• Once complete, tap the bar straight again and let it cool slowly.

If you have used spring steel, bury the poker in ash or vermiculite to cool slowly rather than quenching. Rapid cooling leaves high-carbon steel glass-hard and liable to snap. A poker never needs hardening, so slow cooling is always the safer choice.

Finishing the Steel and Caring for the Tool

Bring the poker back to a black heat — the point where it stops glowing but is still far too hot to touch — and scrub the whole surface with a wire brush. This knocks off scale and leaves a smooth, slightly mottled grey finish that resists rust far better than bare steel.

For protection, warm the metal again until it is uncomfortable to hold near, then rub in beeswax or a little linseed oil with a rag. The warmth draws the finish into the surface. Repeat once a year, or whenever the poker looks dry and chalky, and it will stay black rather than orange.

Store it somewhere dry, and never leave it standing in damp ash overnight. Treated that way, a poker forged from a forgotten length of scrap will outlast most of what you can buy — and you will know exactly where the twist came from.