Making the Opening Smaller
When you throw an open cylinder or bowl, your goal is to widen the form. Collaring is the opposite: it is the technique of narrowing the opening of a form while the wheel spins. It is how potters create bottles, vases, pitchers, and any vessel with a neck narrower than its body.
The Basic Collar
To collar, you encircle the top of the form with both hands (fingers on the outside, thumbs not needed inside) and apply gentle, even inward pressure while the wheel turns. The clay compresses inward and rises slightly at the same time.
- Move your hands upward slowly as the clay narrows.
- Keep pressure even on both sides. Uneven pressure causes the neck to tilt or collapse.
- Work in small increments. One collar move narrows the neck a little. You may need 5-10 collar passes to achieve a dramatic narrowing.
The Key Difference from Regular Pulling
When pulling walls upward, your inside hand does most of the work. During collaring, there is no inside hand: you cannot reach inside a narrow neck. All control comes from the outside. This is why collaring requires patience and gradual pressure.
Keeping the Clay Wet
Narrow necks dry out fast because there is very little surface area touching your fingers. Use a sponge on a stick or a small elephant ear sponge to rewet the interior as needed. A dry neck tears.
Explore More
Collaring is the essential technique behind some of the most iconic forms in ceramic history, from the elegant bottle shapes of Meissen porcelain to the narrow-necked vases of East Asian stoneware. Mastering the balance of inward pressure and wall thickness is what separates a confident bottle from a collapsed cylinder.
Common Mistakes and Quick Fixes
- Over-collaring in one pass: Use many light passes to avoid buckling.
- Uneven two-hand pressure: Check neck verticality after each pass and correct early.
- Dry interior during narrowing: Rewet with sponge-on-stick before tears start.
- Wheel speed too high: Slow to medium speed improves control during collaring.
Practice Exercise
Throw three simple cylinders and practice collaring only, no final bottle shaping. Stop at three neck widths and compare symmetry. This isolates collar control before adding full-form complexity.
