Pott'r Stacking Cup Rib for Creating a Stackable Set of Mugs or Cups

This rib is designed as a former to shape a wheel-thrown cylinder into a consistent, stackable cup or mug.

Used against the outside of a cylinder thrown from approximately 580g of clay, it guides the form into a repeatable profile, allowing multiple pieces to nest neatly together.

The shape is set to create a clean, functional edge while maintaining even wall thickness, helping you produce a uniform set of cups with minimal adjustment or turning.

Applied during the shaping stage, the rib supports the clay as it’s refined, making it easier to achieve a consistent result across a run of cups or mugs.