How to Choose the Best Focal Length for Your Laser Lens: 1.5″ to 4.0″ Explained
How to Choose the Best Focal Length for Your Laser Lens: 1.5″ to 4.0″ Explained If you’re using a CO2 laser cutter (like a K40, Thunder, or custom build), the single most important part of your machine is the focusing lens. But when you look at replacement lenses, you’ll see different focal lengths like 1.5″, […]
