Why the Cylinder Matters

Every potter remembers the first time a cylinder rose cleanly under their hands. It feels like a small miracle. But the cylinder is not just a beginner's exercise; it is the foundation of almost everything you will throw on the wheel. A mug, a jug, a vase, a teapot body, a lidded jar — strip away the handle, the spout and the lid, and what remains is a cylinder. Master this one form and you have unlocked most of the pottery repertoire.

The good news is that the cylinder rewards patience rather than talent. It depends on a few physical principles: a centred lump of clay, consistent wall thickness, and a base sturdy enough to carry the walls upward. Get those right and the form almost throws itself.

Preparing the Clay and Centring

Begin with a ball of clay roughly the size of a large orange, around 500g to 1kg for a mug or small jug. Wedge it thoroughly first — air pockets and uneven moisture will fight you on the wheel far more than your hands ever will. Shape the ball into a rough cone rather than a sphere; it sits more securely on the wheel head and centres more quickly.

Slap the clay down near the centre of the wheel head and press it firmly with the heel of your hand. Start the wheel at a moderate speed. Wet the clay with plenty of water, then brace your left forearm against your hip or the wheel pan and use both hands to push the clay towards the middle. Remember the golden rule: pressure comes from the body, not the wrists. Lean in with your weight, keep your elbows tucked, and pull the clay into a smooth, symmetrical cone. Flatten it back down. Repeat two or three times. This "coning up" aligns the particles and makes the whole lump workable.

Opening the Clay and Establishing the Base

Once the clay runs true with no wobble, press your thumbs into the centre and open a hole, stopping about 1cm to 1.5cm above the wheel head. Do not go through. This leaves the floor of the pot, and its thickness matters enormously. Too thin and the base will sag or crack; too thick and the pot will feel clumsy in the hand and dry unevenly.

Widen the opening with your fingers, pushing outwards from the middle and keeping the floor flat. Use a sponge to soak up the slurry that gathers in the bottom — a puddle of slip will weaken the base and make it difficult to judge thickness. Feel the floor with your fingertips. It should be firm, level, and roughly the thickness of a £1 coin.

Pulling the Walls Up

This is the heart of the process. Wet the outside of the cylinder generously. Place your left hand inside the pot and your right hand outside, with the clay sandwiched between the side of your left thumb and the knuckle of your right index finger. Start at the base of the wall.

Now pull upward in one slow, continuous movement, letting the wheel do the spinning. Squeeze gently — imagine you are trying to lift the clay rather than crush it. Both hands should rise together at the same speed, with the inside hand supporting the wall and the outside hand guiding it. Do not pinch. If the wall narrows too suddenly, the clay above it will be starved of material and thin out dangerously.

• Make three pulls in total for a mug-sized cylinder, each starting from the base.
• Keep your hands wet but not dripping; too much water turns the clay to mush.
• If the rim thickens or wobbles, recentre it gently with a damp sponge.
• Compress the rim after each pull to stop it splaying outwards.

Aim for a wall thickness of roughly 6mm to 8mm for everyday domestic ware. Thinner walls are elegant but fragile; thicker ones are sturdy but heavy. Run your fingertips up the outside of the cylinder occasionally to check for bulges or thin spots.

Shaping, Refining and Finishing the Rim

Once your cylinder is tall and even, you can leave it as it is or shape it into something more interesting. For a mug, bell the body outwards slightly near the middle. For a jug, narrow the neck by pinching gently as you pull. For a vase, flare the rim with a light outward pressure of your fingertips. Whatever shape you choose, make those adjustments before the clay stiffens, while it is still plastic.

Finish by tidying the rim. A clean, rounded rim looks intentional and feels pleasant to drink from. Dampen a sponge, cradle the rim between thumb and forefinger, and smooth it as the wheel turns slowly. Then run a wooden rib or your fingertip down the outside wall to compress the surface and remove throwing lines if you want a smooth finish.

Removing the Pot and Leaving It to Dry

Stop the wheel. Run a thin wire tool underneath the pot, keeping it flat against the wheel head and pulling towards you in one steady motion. Do not saw back and forth — that leaves ridges in the base. Leave the pot on the wheel head or transfer it carefully to a board.

Let the cylinder firm up to leather-hard before you touch it again. This usually takes a few hours to overnight, depending on the room. Once it holds its shape without denting, you can turn the base, attach a handle, or trim the foot ring. Cover it loosely with plastic if drying is too fast; uneven drying causes cracks at the base and rim, and there is nothing more frustrating than losing a good cylinder at the final hurdle.

Throw ten cylinders in a row and you will see your hands learn what words cannot teach. Each one will be better than the last, and before long, mugs and jugs will feel like second nature.