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WebGL could not be initialised, so the interactive view has been replaced with a static schematic. Every control below still works and the numbers are still calculated.
Back to 3D StudioCutting plane
Form
Display
Section measurements
| Wall thickness (min) | — mm |
| Wall thickness (max) | — mm |
| Wall thickness (avg) | — mm |
| Base thickness | — mm |
| Cavity depth | — mm |
| Internal volume | — ml |
| Uniformity score | — / 100 |
Trim advice
Move the cutting plane to inspect the wall.
Cutting a pot without breaking it
The Clay Cutter uses a clipping plane — a mathematical half-space that discards everything on one side of it. Move the plane and you see the interior of the form in real time, which is the digital equivalent of cutting a test pot in half on the bandsaw.
Why this matters more than it sounds
Almost every structural failure in a fired pot traces back to wall thickness. A wall that varies from 4 mm to 11 mm around the same rim will dry unevenly, and uneven drying is the leading cause of cracking and warping. You cannot see that from the outside. A section shows it immediately.
How the numbers are calculated
- Wall thickness is sampled at 64 points around the section, measuring the distance between the inner and outer profile at each one. Minimum, maximum and average are reported.
- Uniformity score is 100 minus the coefficient of variation of those 64 samples, scaled. Above 85 is production quality; below 60 means the wall needs work.
- Base thickness and cavity depth come from the section directly — the vertical distances at the axis.
- Internal volume integrates the inner profile, so it tells you what the pot will actually hold.
Throwing a pot usually leaves the base much thicker than the wall. Trimming fixes it, but only if you trim deep enough. Set the cutting plane near the base and check the ratio: for a mug, the base should be no more than about 1.5× the wall.
Try these experiments
- Load the Mug preset and read the uniformity score. Then move the cutting plane up and down and watch how the wall thins toward the rim.
- Switch to the Plate preset. Plates have the worst base-to-wall ratio of any common form — check the base thickness figure.
- Tilt the cut angle to 30 ° and look at what the section reveals about the foot. An angled cut exposes the transition from base to wall, which is where cracks usually start.
Related tool references
- Trimming Tool — The loop on a handle that gives a pot its foot.
- Loop Tool — Hollow a form, flute a surface, refine a curve.
- Wire Cutter — Separate a pot from the bat, or slice a block into even slabs.
- Pottery Wheel — The centre of the studio: a motorised head that spins clay into round forms.
Try the rest of the studio
Wheel Thrower
A parametric pottery wheel. Drag the clay to change height and diameter, tune the rim, neck and wall thickness, then read off capacity, dimensions and the clay weight you will need.
Glaze Painter
Paint glaze straight onto a rotating 3D pot. Eight preset glazes, a brush, a sponge, a dip tank and a wax resist, all mapped to a live texture as you work.
Kiln Curve Simulator
Build a firing curve segment by segment, then play it back and watch the kiln climb. Presets cover bisque, glaze, raku and stoneware schedules.