This page lists 10 community-tested settings for 3mm Black Acrylic. Acrylic cuts and engraves cleanly on both CO2 and diode lasers. Cast acrylic gives a frosted edge on cuts; extruded acrylic melts and polishes.
Opaque black acrylic only — 450nm diode passes through clear acrylic. With 33W and air assist, cuts cleanly in a single pass at high speed. Remove protective paper before cutting. Constant power mode. Check for slight haze on edge — remove masking immediately if present.
Opaque/cast black acrylic only — clear acrylic passes straight through 450nm diode. The S6 Pro needed 10 passes at 600mm/min vs S6 needing 16, per hobbylasercutters review. Constant power mode. Remove protective paper after cut.
Opaque/cast black acrylic only. Use Constant Power mode in LightBurn. Focus 1–2mm below surface. Clear acrylic is not suitable — 450nm diode passes straight through it.
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