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Backlit · white key

A backlit set: translucent C/M/Y + a translucent white key

Lithophanes are lit from behind, so tone comes from thickness and the key must be a translucent white — a black key would just block the light. For tonal work, the most important spools are a true opaque black and a translucent white that spans dark→light.

On an AMS/MMU, expect filament purged between swaps (a waste tower) — match the slot order to your slicer.