Getting started
All articles
Determining focal lengthLearn how to measure and determine the exact focal length of an unmarked CO₂ laser lens using simple light projection and focal point measurement.
>Different lensesChoose the right laser lens for cutting and engraving. Compare 50.8 mm detail lenses, 63.5 mm all-purpose lenses, and 101.6 mm lenses for thick materials.
>Finding true focus with a ramp testHow to verify the real focus height of your laser empirically when the focus tool is missing, the nozzle has changed, or you need to focus into thick material.
>Focus distance (different lenses)Find the exact focus distance and step gauge height for 50.8 mm, 63.5 mm and 101.6 mm lenses across BRM Pro, Slim, Original and Budget laser machines.
>Laser fumes, and why extraction is not optionalUnderstand what CO₂ laser cutting releases, why workshop extraction protects operators and machines, and how to scope the right extraction unit.
>Lens assemblyHow to assemble and orient a CO₂ laser lens correctly: convex side facing up, flat side down, and securing the retaining ring without scratching optics.
>Lens compatibility by machine modelCheck lens compatibility and lens tube configurations for BRM Pro, Slim, Original and Budget laser machines across standard focal length options.
>Preparing your workshop before the laser machine arrivesPrepare your workshop for laser machine delivery: floor space, electrical supply, exhaust routing, water chiller setup, PC requirements and site access.
>Why you should not laser PVCLearn why laser cutting PVC and chlorinated plastics produces hydrochloric acid gas, creating severe health hazards and rapidly corroding laser machines.
>Which materials can you cut with a CO₂ laser, and what to avoidComprehensive guide to safe, caution, and prohibited materials for CO₂ laser cutting and engraving, plus burn tests to identify unknown plastics.
>