Magnet Polarity Discriminator
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Simple 3D-printed tool using a reference magnet to quickly identify a magnet’s North and South poles.
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Model information
- Source
- Printables
- Category
- Tools
- License
- Creative Commons — Attribution
A simple 3D-printed magnet polarity discriminator designed to quickly identify the North and South poles of a magnet. A small reference magnet is captured in a cavity of the printed body, allowing the unknown magnet’s polarity to be determined by attraction or repulsion. No electronics or power required—just a simple, reliable application of magnetic attraction and repulsion.
Print Settings | |
|---|---|
Layer Height | 0.2mm |
Solid Layers - Bottom | 4 |
Solid Layers - Top | 5 |
Color Change #1 | Layer 5 (1mm) |
Color Change #2 | Layer 30 (6mm) |
The magnet cavity measures 5mm X 15.5mm and is meant to accomodate a 4.5mm X 15mm magnet.

