Throwing a tall cylinder is one of those milestones that every potter remembers. It looks simple enough — just pull the clay upwards — but in reality it demands patience, control, and a steady hand. The good news is that tall cylinders are not about strength; they are about technique. Keep the clay centred, pull slowly, and maintain even wall thickness, and you will get there. Practise with one kilogram balls to build control, and soon you will be throwing consistent, elegant forms.

Start with a Properly Centred Mound

Centring is everything. If the clay is even slightly off-centre, every pull will exaggerate the wobble until the cylinder collapses. Use one kilogram of well-wedged clay. Cone the clay up and down several times — this aligns the particles and works out any air pockets. Keep your elbows braced against your thighs or the wheel frame. Use the heel of your hand and your fingers to push the clay into a perfect cone. Do not rush. A good centre feels almost effortless — the clay spins without a bump or thump. If you feel any vibration, stop and re-centre. Remember: you cannot pull a tall cylinder from a poorly centred mound.

Open the Clay and Compress the Floor

Once centred, open the clay with your thumbs or fingers. Press down to create a floor about one centimetre thick. Compress the floor thoroughly with a wooden rib or your fingertips. This simple step prevents S-cracks later and gives you a solid base to pull from. Then start to open the hole outwards, keeping the walls thick enough to pull. Do not open too wide too soon. For a tall cylinder, you want a relatively narrow base — roughly the width of your hand. Keep the rim moist but not soaking wet. If the clay becomes too soft, stop and let it firm up slightly before pulling.

Pull Slowly and in Small Stages

This is where most beginners go wrong. They try to pull the entire height in one go. Instead, pull in small increments — no more than two to three centimetres per pull. Use one hand inside and one outside, with your inside fingers pressing outwards and your outside fingers guiding the clay upwards. Lubricate with a little water or slip, but do not drown the clay. Start each pull from the base and move steadily towards the rim. Keep your movement smooth and slow. After each pull, compress the rim with a sponge or your thumb. This keeps the rim even and prevents it from thinning too much. You will need perhaps six to ten pulls to reach a good height, depending on the size of your ball.

Maintain Even Wall Thickness

Even walls are the difference between a cylinder that stands tall and one that collapses. As you pull, feel the wall between your thumb and fingers. It should feel consistent all the way up. If one area feels thicker, pull gently there. If it feels too thin, stop pulling and compress instead. Use a rib to shape the outside and compress the clay. You can also check thickness with a needle tool or a pair of potter's calipers. Aim for walls about five to seven millimetres thick for a twenty-centimetre cylinder. Thinner walls are possible but require more skill. Thick walls are heavy and prone to cracking during drying and firing.

Practise with One Kilogram Balls

The best way to build control is to throw the same size ball over and over. One kilogram is ideal — enough to make a cylinder roughly fifteen to twenty centimetres tall. Prepare ten one-kilogram balls. Throw each one as a cylinder. Then cut them in half vertically with a wire. Look at the walls. Are they even? Is the floor flat? Where did it go wrong? Recycle the clay, wedge it well, and try again. Repeat this exercise regularly. You will quickly learn how much water to use, how fast to spin the wheel, and how much pressure to apply. As you improve, you can move to one-and-a-half or two-kilogram balls.

Common Problems and How to Fix Them

• Collapsing cylinder: Usually caused by too much water or pulling too fast. Slow down, use less water, and compress the rim after every pull.
• Spiralling or uneven rim: Often a sign of inconsistent hand pressure. Keep both hands steady and compress the rim with a damp sponge.
• Thin patches: You are pulling too hard in one spot. Feel the wall constantly and pull gently where it is thicker.
• Thick, heavy base: Open the clay more evenly and compress the floor before pulling. Trim excess clay from the base later if needed.
• S-cracks in the floor: You did not compress the floor enough. Always rib the floor thoroughly before pulling walls.

With regular practice, tall cylinders will become second nature. Focus on centring, slow pulls, and even walls. Keep your clay well wedged and your hands steady, and enjoy the process — every potter has a bucket of failed cylinders behind them. Yours will soon be tall and true.