Stoneware Clay for Kiln Firing

A grey stoneware clay ball on a pottery wheel ready for throwing in a workshop

Stoneware was the clay that changed everything for me — the first time I opened a kiln and held a bowl that had gone in as a soft shape and come out as something genuinely solid and permanent. It is a mid-fire clay body that works on the wheel and at the hand-building table, and it is the material most intermediate potters settle on as their primary clay.

Price: $ 38.00 per 5 kg bag
Delivery: Dispatched within two business days once payment is confirmed
Our responsibility: The clay arrives sealed and at the correct weight, with consistent plasticity and grog content as described, suitable for wheel throwing and hand building
How we review: We review the order together within 14 days of delivery — any condition or accuracy issue found is addressed promptly at no extra cost

Stoneware clay has been the workhorse of functional pottery for centuries — from the salt-glazed crocks of early European settlers to the studio pottery shelves of contemporary Canadian makers. Its appeal has not changed: it is forgiving on the wheel, takes glazes well, and fires to a dense, durable result that holds up to daily use. The leap from air-dry clay to stoneware is the point where pottery stops being a passing interest and starts becoming a genuine practice.

Price is fixed per 5 kg bag and is due at checkout. Firing is not included — a kiln capable of reaching cone 6 is required. No substitutions are made without prior notice.

What you receive with this product

Each order contains one sealed 5 kg bag of mid-fire stoneware clay body, prepared at a consistent moisture level suitable for direct use on arrival. The clay body contains a medium-fine grog content for structural support during hand building and sufficient plasticity for wheel throwing. A product sheet is included with recommended firing temperatures, shrinkage rate guidance, and compatible glaze ranges. This clay is designed for cone 6 electric or gas kiln firing.

One sealed 5 kg bag of mid-fire stoneware clay at working moisture, ready to use on arrival
Product sheet with cone 6 firing guidance, shrinkage rate, and compatible glaze temperature range
Medium-fine grog content suitable for both wheel throwing and hand-building techniques

What is needed from you

A kiln capable of reaching cone 6 temperatures is required to fire this clay to maturity. If you are firing at a shared community studio, confirm the kiln's temperature range before ordering. Unused clay should be stored in its sealed bag in a cool location. If the clay dries out between sessions, it can be reclaimed by breaking it into small pieces, submerging in water, and working it back to a workable consistency once it has absorbed the moisture evenly — a process that takes patience but wastes nothing.

After hand-over and what the defect window covers

The 30-day defect window covers the condition of the clay as supplied: seal integrity, stated weight, and consistency with the product description. It does not cover variation in fired colour or texture caused by kiln conditions, glaze chemistry, or firing atmosphere — these are outcomes that depend on variables the operator cannot observe. Natural colour variation in the raw clay body between production batches is a characteristic of natural materials and does not constitute a defect.

Ask about stoneware clay