... SH-K40 Laser engraving machine for stamp2. Applicable MaterialsVarious non-metal materials,such as rubber, acrylic, plexiglass, bowlder, crystal, wood, ... such as rubber,ox horns,wood,plexiglass, atomic materials,crystal,bowlder, etc.. (2).Applying for processing of small- ... will last for long time.4. Technical Parameters Laser Power40WPower SupplyAC220±10% 50HZ/AC110±10 60HZOperating Temperature5°C ...