The Mr. Carve M3 diode laser is a compact, lower‑cost cutter with dual blue/IR heads (IR for metals), an actual work area of 320×320 mm and claimed 8 mm cutting depth; it cut cleanly (20 mm EVA needed five passes), is quieter and water‑free compared with CO2 units, but needs careful ventilation, a learning curve, and is not a full replacement for large CO2 systems.