Quote the same batch everywhere
Give each firing service an identical list of pieces, dimensions, materials and firing stage. Include photographs if they help explain the shape. A collection of small bowls and a single tall sculpture can occupy kiln space differently even if they weigh the same, so weight alone may not describe your job.
Ask the operator which charging method applies: weight, volume, shelf area, individual pieces or an entire load. Confirm how it measures that quantity and whether your estimate will be checked at drop-off. Keep the quoted service and the measurement method beside the amount in your comparison.
Look beyond the headline unit
Ask about minimum charges, special handling, test firings, storage and any potential charges described in the service’s terms. Establish whether tax is included in the quote. Do not assume every service has these extras; the purpose of the checklist is to find what actually applies to your batch.
Separate bisque and glaze firing where both are required. Include the cost and time of each collection and return journey. A convenient studio with a suitable programme may be a better practical fit than a cheaper unit rate that requires several long trips or separate providers for the two stages.
Know what whole-kiln hire includes
Whole-kiln arrangements may be useful for a large batch or a programme not offered in regular shared loads, but clarify what is included. Ask who loads and operates the kiln, what usable dimensions apply and whether the programme must be approved. Do not assume “hire” means you will operate the equipment yourself.
Ask the operator to confirm that the whole-kiln option is available for your batch and date. Clarify whether a specialist temperature or atmosphere changes the minimum charge or schedule. A published hire option is useful for comparison, but only the provider can accept the actual booking.
Compare timing and terms alongside price
Request the likely intake date, firing window and pickup date. Ask what happens if the load is delayed or the studio decides a piece cannot be accepted. For deadline-sensitive work, show the final date to the operator rather than working backwards from an optimistic estimate on your own.
Finish with a short comparison: accepted materials, usable size, total quoted amount, included stages, travel requirements and remaining uncertainties. Read the terms dealing with firing outcomes and collection. Choose the option that meets the technical brief and schedule first, then compare the complete cost among those that genuinely fit.
Sources & further reading
- Clay Cartel: firing services (opens in a new tab)
- Glaze Galleria: firing service (opens in a new tab)
Prepared 5 November 2026. General planning guidance, not a substitute for provider instructions or professional advice.