3D preview of Sphere = 4 Circles (Lune Dissection Model)
Loading the interactive model…
Interactive 3D model of Sphere = 4 Circles (Lune Dissection Model)

Everything else

Sphere = 4 Circles (Lune Dissection Model)

1 views
Bounding box
60.2 × 60.2 × 75.1 mm
Engine
Precision B-rep
Parameters
6
Published
October 10, 2026

Download

Free to download and use. See the terms.

The prompt

Make a 3d model of a sphere that shows why the surface of a sphere is made of the surface of 4 circles

Parameters

NameValueRange
Sphere Radius (R)30 mm10 – 60
Meridian Groove Width2 mm1 – 10
Meridian Groove Depth24 mm5 – 55
Gap Above Base Disc10 mm3 – 40
Stem Diameter14 mm4 – 30
Base Disc Thickness5 mm2 – 15

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.

Sphere = 4 Circles (Lune Dissection Model) - Free CAD Model (STEP, STL) | TextoCAD