Sources and standards
Sources for methods and safety, plus the content update policy.
Method sources
- Digitalfire — drying shrinkage, firing shrinkage and porosity testing; accessed 17 July 2026.
- Edward Orton Jr. Ceramic Foundation — pyrometric cones and heatwork; accessed 17 July 2026.
- Skutt — approximate firing-cost formula; accessed 17 July 2026.
- CDC/NIOSH — silica dust and exposure controls; accessed 17 July 2026.
The service does not copy recipe databases or manufacturer commercial data.