A worked example
A 100 mm fired target with 12% shrinkage needs about 113.636 mm wet.
Plan for clay shrinkage, estimate slab material and keep a small notebook of your test pieces.
Make a little planLoading your local workspace…
Fired size = wet size × (1 − shrinkage / 100). Reverse planning divides by the same factor.
A 100 mm fired target with 12% shrinkage needs about 113.636 mm wet.
Assumes uniform linear shrinkage. Warping, anisotropy, firing variation and glaze behavior are not predicted.
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Calculate wet dimensions for a target fired size, or predict the fired size.
Open toolMeasure shrinkage from your own wet, dry and fired reference marks.
Open toolEstimate a rectangular slab’s volume and mass from dimensions and your clay density.
Open toolKeep clay, test shrinkage and firing notes, then export a local notebook.
Open tool