Materials
Know what you're working with.
Material safety references, not a validated settings library. Composition, tooling and equipment must be considered together.
Materials reference
Laser materials: suitability comes before settings
Unknown materials must not be treated as laser-safe; consult the manufacturer's guidance and your facility's safety procedure.
Source: University of Washington EH&S — laser cutter safety
Materials reference
Workholding and safeguards belong in every CNC plan
Geometry and simulation do not replace suitable workholding, manufacturer safeguards, or hands-on training.
Source: University of Washington EH&S — shop and maker-space safety