M3 Insert Calibration Dice

🧊 M3 Insert Calibration Dice

This model helps you find the perfect hole size for heat-set M3 inserts on your specific printer and insert type.
It looks like a dice — but instead of numbers, each side contains different test holes for tuning your insert fit.

🔍 Why this is useful

Tolerances can vary between:
• different printers and slicer settings
• filament brands
• print orientations (horizontal vs vertical surfaces)
• even insert brands and outer diameters

This test dice lets you quickly find the best hole size for your setup before committing to your real part.

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🧠 How it works

Each side of the dice has holes with slightly different diameters indicated by the engraving (mm).
Print the dice in three orientations, so each face is printed once:
1. facing upward or downward
2. and vertically.

This way, you can test how the insert fits in both horizontal and vertical hole directions — which often behave differently due to print layer structure and melt flow.

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⚙️ Printing