Clay Body Recipe Calculator
Calculate ingredient weights for a custom clay body from batch size and percentage breakdown of clay, feldspar, silica, and flux.
Inputs
lbs
%
%
%
%
Results
Clay Weight
25 lbs
Feldspar Weight12.5 lbs
Silica Weight10 lbs
Flux Weight2.5 lbs
Water Needed (~22%)11 lbs
Entered Total100%
How to Use This Calculator
- Enter the total batch size in pounds (e.g., 50 lbs for a typical studio batch).
- Set the percentage of clay minerals (kaolin or ball clay) — aim for 40–60% for good plasticity.
- Adjust feldspar percentage (15–30%) to control flux and glass-forming properties.
- Set silica/flint percentage (15–25%) to add structural strength and reduce fired shrinkage.
- Enter flux percentage (whiting, talc, or dolomite) to fine-tune the vitrification temperature.
- Read the calculated ingredient weights in lbs for each component, plus the recommended water addition (~22% of dry weight).
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