Observed arrival · 2026-10-25
PotteryShrinkLab’s clay shrinkage calculator
A ceramics planning tool for estimating wet dimensions from a measured shrinkage test, with an optional glaze-quantity calculation.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Potters planning fired dimensions from test results
- Worth noticing
- A worked example distinguishes adding shrinkage from reversing it: a 12 cm fired target needs about 13.64 cm wet at the example’s 12% test ratio.
Field notes
The page lays out a wet-to-fired test workflow and tells users to keep the clay identity, firing schedule, and test conditions with the result. Its example also shows the reverse calculation: at a 12% test ratio, a 12 cm fired target corresponds to about 13.64 cm wet. Glaze quantity is handled separately using measured surface area and per-coat usage, with the sample calculation including coats and an allowance.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue