Hunst China CO2 ZnSe Focus Lens Dia.12 18 19.05 20mm FL38.1 50.8 63.5mm for Laser Engraving Cutting Machine Spare Parts $100 - $400 1: Cool the laser head

1: Cool the laser head and blow away the residue from the lens

Quiet performance: Polyurethane steel wire core synchronous belt has good shock absorption and noise reduction performance

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There are four universal casters at the bottom

Hunst China CO2 ZnSe Focus Lens Dia.12 18 19.05 20mm FL38.1 50.8 63.5mm for Laser Engraving Cutting Machine Spare Parts $100 - $400 1: Cool the laser headHigh quality ZnSe crystal: China PVD ZnSe material, Excellent optical properties, Up to 200W CO2 laser resistance. Superb coating process: Double sided solid coating, reduces laser loss, laser transmittance up to 99. 8%High precision process: Eccellent substrate Precise sling, polishing grinding processes, high temperature, laser resistance. 1. Use an air bulb to blow off any loose contaminants.(dust,lint particles) 2. Squeeze a few drops of acetone