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A shared machine needs to survive its least experienced user. That means an enclosed Class-1 design with interlocks, camera-based placement (it removes the most common beginner errors), and filtration sized for an indoor room that cannot vent.
Best enclosed desktop lasers →Materials that are never safe →The settings library →

Write the materials policy before the first class: an allowed list on the wall, chlorinated plastics banned outright, and a test-grid ritual as the onboarding exercise. Our settings library doubles as courseware — every chart carries its safety block.

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Materials You Should Never Laser Cut (and the Safe Swaps)

Never PVC (chlorine). Faux leather, ABS, foams, fiberglass and PTFE also appear on university and maker no-go lists. Here is each material, the stated hazard, who said it, and a safe swap.

Mara Vance· Oct 20, 2026· 9 min

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