TEN-HIGH GaAs Laser Lens Diameter 20mm Focal Lens for CO2 Laser Cutting Engraving Machine, FL: 1.5' (1.5'/38.1mm)

TEN-HIGH GaAs Laser Lens Diameter 20mm Focal Lens for CO2 Laser Cutting Engraving Machine, FL: 1.5' (1.5'/38.1mm)

TEN-HIGH GaAs Laser Lens Diameter 20mm Focal Lens for CO2 Laser Cutting Engraving Machine, FL: 1.5' (1.5'/38.1mm)

Engraving Machines & Tools TEN-HIGH GaAs Laser Lens Diameter 20mm Focal Lens for CO2 Laser Cutting Engraving Machine, FL: 1.5' (1.5'/38.1mm)

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2-in-1 CNC 3018pro-M DIY Mini CNC Machine, Yofuly 5500mW Laser Engraver, GRBL Control 3 Axis DIY Mini CNC Machine Wood Router Engraving Machine with Offline Controller + ER11 Extension Rod + CNC Rout  2-in-1 CNC 3018pro-M DIY Mini CNC Machine, Yofuly 5500mW Laser Engraver, GRBL Control 3 Axis DIY Mini CNC Machine Wood Router Engraving Machine with Offline Controller + ER11 Extension Rod + CNC Rout,Engraving Machines & Tools,Beading & Jewelry Making,Arts, Crafts & Sewing Replacement Diamond tip bit for the Electric Cordless Engraving Engraver Pen(Bit 10 pcs)  Replacement Diamond tip bit for the Electric Cordless Engraving Engraver Pen(Bit 10 pcs),Engraving Machines & Tools,Beading & Jewelry Making,Arts, Crafts & Sewing Power Electric Engraver Engraving Tool Etch Metal Jewelry Glass Marker Marking  Power Electric Engraver Engraving Tool Etch Metal Jewelry Glass Marker Marking,Engraving Machines & Tools,Beading & Jewelry Making,Arts, Crafts & Sewing TEN-HIGH Laser Engraver Power Supply High Voltage Cable, 2 Meters High Voltage Wire with 1Pair Protect Connector head for CO2 Laser Power Supply Laser Tube Engraving Accessor  TEN-HIGH Laser Engraver Power Supply High Voltage Cable, 2 Meters High Voltage Wire with 1Pair Protect Connector head for CO2 Laser Power Supply Laser Tube Engraving Accessor,Engraving Machines & Tools,Beading & Jewelry Making,Arts, Crafts & Sewing Titoe Upgrade 7000mw Laser Engraver CNC Engraving Machine Mini DIY Desktop Engraver Router Wood Printer Supporting Computer/Offline/Bluetooth Control for Handicraft Working Area :200mm x290mm ?  Titoe Upgrade 7000mw Laser Engraver CNC Engraving Machine Mini DIY Desktop Engraver Router Wood Printer Supporting Computer/Offline/Bluetooth Control for Handicraft Working Area :200mm x290mm ?,Engraving Machines & Tools,Beading & Jewelry Making,Arts, Crafts & Sewing GRS Tools 022-713 C-Max Carbide Parallel Flat Graver # 39, 0.8 mm Tool Point  GRS Tools 022-713 C-Max Carbide Parallel Flat Graver # 39, 0.8 mm Tool Point,Engraving Machines & Tools,Beading & Jewelry Making,Arts, Crafts & Sewing NEWTRY MACH3 CNC Z Axis Setting Touch Engraving Milling Machine Tool Setting Tool Setter Setting Probe Auto-Check Instrument tool zero sensor for CNC Router  NEWTRY MACH3 CNC Z Axis Setting Touch Engraving Milling Machine Tool Setting Tool Setter Setting Probe Auto-Check Instrument tool zero sensor for CNC Router,Engraving Machines & Tools,Beading & Jewelry Making,Arts, Crafts & Sewing 110V 100W Co2 L.a.s.e.r Power Supply HY-DY13 for CO2 Engraving Cutting Machine Compatible with RECI Z4 / W4 / S4 100-120w L.a.s.e.r Tube, for EFR, Yongli, WEEGAINT, SP and Others  110V 100W Co2 L.a.s.e.r Power Supply HY-DY13 for CO2 Engraving Cutting Machine Compatible with RECI Z4 / W4 / S4 100-120w L.a.s.e.r Tube, for EFR, Yongli, WEEGAINT, SP and Others,Engraving Machines & Tools,Beading & Jewelry Making,Arts, Crafts & Sewing

How to Determine Focal Length?
The Focal Length is the Distance Between the Focal Lens and the Cutting/Engrave Material.
When install the Lens, Make Sure the Focusing Lens: Convex Face to Laser, Concave Face to Material.
How to Clean Laser Lens and Mirrors?
Step 1 Cleaning for Light Contamination (dust, lint particles)
Use an air bulb to blow off any loose contaminants from the optic surface before proceeding to the cleaning steps.
Step 2 Cleaning for Light Contamination (smudges, fingerprints)
Lay the lens tissue on the optic's surface. Using an eyedropper, squeeze a few drops of acetone onto the lens tissue, wetting the complete optic's diameter. Without lifting the lens tissue, drag the lens tissue across the optic just fast enough so that the liquid evaporates behind the tissue. This should leave no streaks.
Step Cleaning for Moderate Contamination (spittle, oils)
Dampen an unused cotton swab or cotton ball with white distilled vinegar. Using light pressure, wipe the optic's surface with the damp cotton. Wipe excess distilled vinegar with a clean dry cotton swab. Immediately dampen a cotton swab or cotton ball with acetone. Gengly wipe the optic's surface to remove any acetic acid.

TEN-HIGH GaAs Laser Lens Diameter 20mm Focal Lens for CO2 Laser Cutting Engraving Machine, FL: 1.5' (1.5'/38.1mm),Engraving Machines & Tools,Beading & Jewelry Making,Arts, Crafts & Sewing

TEN-HIGH GaAs Laser Lens Diameter 20mm Focal Lens for CO2 Laser Cutting Engraving Machine, FL: 1.5' (1.5'/38.1mm)

2-in-1 CNC 3018pro-M DIY Mini CNC Machine, Yofuly 5500mW Laser Engraver, GRBL Control 3 Axis DIY Mini CNC Machine Wood Router Engraving Machine with Offline Controller + ER11 Extension Rod + CNC Rout Replacement Diamond tip bit for the Electric Cordless Engraving Engraver Pen(Bit 10 pcs) Power Electric Engraver Engraving Tool Etch Metal Jewelry Glass Marker Marking TEN-HIGH Laser Engraver Power Supply High Voltage Cable, 2 Meters High Voltage Wire with 1Pair Protect Connector head for CO2 Laser Power Supply Laser Tube Engraving Accessor Titoe Upgrade 7000mw Laser Engraver CNC Engraving Machine Mini DIY Desktop Engraver Router Wood Printer Supporting Computer/Offline/Bluetooth Control for Handicraft Working Area :200mm x290mm ? GRS Tools 022-713 C-Max Carbide Parallel Flat Graver # 39, 0.8 mm Tool Point NEWTRY MACH3 CNC Z Axis Setting Touch Engraving Milling Machine Tool Setting Tool Setter Setting Probe Auto-Check Instrument tool zero sensor for CNC Router 110V 100W Co2 L.a.s.e.r Power Supply HY-DY13 for CO2 Engraving Cutting Machine Compatible with RECI Z4 / W4 / S4 100-120w L.a.s.e.r Tube, for EFR, Yongli, WEEGAINT, SP and Others 505 Cordless Precision Engraver with Diamond Tip Bit (New Version) Ortur Laser Master Laser Engraver 15W/20W Portable Laser Engraving Machine Mini Carver Desktop DIY Laser Marking for Metal Deep Wood Engraving Cutting, Working Area 160x150mm (15W) CNCOLETECH 19mm ZnSe Focus Lens for CO2 10600nm 10.6um Laser Engraver/Cutter FL:2' or 50.8mm 2-in-1 5500mW Laser Engraver CNC 3018 Pro Engraving Machine, GRBL Control 3 Axis CNC Router Kit Wood Carving Engraving Machine with Offline Controller, Working Area 300x180x45mm Cloudray CR-3000DG Industry Water Chiller 9L Capacity Cooling Water for 60W/80W CO2 Engraving Cutting Machine 50W CO2 Laser Tube 850mm Length for Laser Engraving and Cutting Machine and Laser Engraver, AC110V Cordless Engraving Pen for Glass Leather Metal Steel Electronic Wood & CD with 1 More Replacement Tip Powered by AA Batteries and Free Alphabet Pattern (136 Characters Styles) Cloudray E Series CO2 Laser First Mirror Mount Diameter 25mm for Laser Engraving Cutting Machine ?

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