CNC Laser Course

Lesson 1 • Industry Applications and Material Overview

This section surveys cutting, engraving, marking, and welding applications across metals, plastics, wood, and composites. It frames the course scope within real production contexts.

Lesson 2 • Laser Physics and Light Properties

This section covers wavelength, coherence, and beam divergence as they apply to cutting and engraving. It establishes the physical basis for all machine settings discussed later.

Lesson 3 • Types of Laser Sources

This section compares CO2, fiber, diode, and Nd:YAG laser sources by power, wavelength, and material compatibility. It guides source selection for specific production needs.

Lesson 1 • Laser Hazard Classification

This topic explains the international laser class system and the hazards associated with each class. It enables correct labeling, signage, and access control decisions.

Lesson 2 • Emergency Procedures and Regulatory Compliance

This topic defines emergency stop protocols, incident reporting, and alignment with workplace safety regulations. It prepares learners to respond correctly and document incidents.

Lesson 3 • Personal Protective Equipment for Laser Work

This topic covers optical density ratings, wavelength-specific eyewear, and protective clothing standards. It ensures correct PPE selection before learners approach any machine.

Lesson 1 • Assist Gas System Configuration

This topic covers gas type selection, pressure settings, and nozzle flow for oxygen, nitrogen, and air cutting. Gas choice directly affects cut quality, oxidation, and operating cost.

Lesson 2 • Beam Alignment Procedures

This topic teaches mirror and lens alignment using burn paper and alignment targets for CO2 and fiber systems. Correct alignment directly determines cut quality and machine longevity.

Lesson 3 • Homing, Work Offsets, and Datum Setting

This topic explains machine home, work coordinate systems, and datum setting for repeatable part positioning. It connects coordinate concepts to accurate multi-part production runs.

Lesson 4 • Focus Height and Nozzle Setup

This topic covers manual and auto-focus methods, standoff distance, and nozzle type selection for different materials. Proper focus is the single largest variable in cut edge quality.

Lesson 1 • Lead-In, Lead-Out, and Cut Sequencing

This topic covers lead-in geometry types, pierce point placement, and cut order logic to prevent part movement and heat buildup. Sequencing decisions directly affect part quality and cycle time.

Lesson 2 • Vector Drawing Fundamentals

This topic introduces nodes, paths, curves, and closed contours as the geometry basis for laser toolpaths. Clean vector geometry is a prerequisite for all downstream CAM operations.

Lesson 3 • Importing and Cleaning Design Files

This topic covers DXF, DWG, SVG, and AI file import, and techniques for fixing gaps, duplicates, and overlapping geometry. File quality directly determines toolpath reliability.

Lesson 4 • Nesting and Material Utilization

This topic teaches manual and automatic nesting strategies to maximize sheet yield and minimize scrap. Efficient nesting reduces material cost and cycle time simultaneously.

Lesson 1 • Systematic Parameter Optimization

This topic introduces structured test grids, cut sample evaluation, and parameter logging to reach optimal settings efficiently. Systematic methods replace trial-and-error and build a reusable process library.

Lesson 2 • Cutting Mild Steel and Stainless Steel

This topic provides parameter ranges and gas selection strategies for carbon steel with oxygen and stainless with nitrogen. It covers dross formation, edge oxidation, and surface finish targets.

Lesson 3 • Core Parameter Relationships

This topic defines power, speed, duty cycle, frequency, and their combined effect on heat input and cut quality. Understanding these interactions is the foundation of all parameter optimization.

Lesson 4 • Cutting Aluminum and Non-Ferrous Metals

This topic addresses reflectivity, high thermal conductivity, and parameter adjustments specific to aluminum, copper, and brass. Anti-reflective strategies protect optics and ensure stable cutting.

Lesson 1 • Industrial Marking and Traceability

This topic teaches 1D barcode, 2D Data Matrix, and alphanumeric marking for part identification and traceability compliance. It covers mark verification and readability standards.

Lesson 2 • Engraving vs. Marking vs. Annealing

This topic distinguishes material removal engraving, surface color change marking, and heat-induced annealing by mechanism and application. Correct process selection prevents material damage.

Lesson 3 • Engraving Parameter Optimization

This topic applies power, speed, and frequency adjustments to achieve consistent depth and contrast across material batches. It builds a reusable engraving parameter library for common substrates.

Lesson 4 • Image Preparation for Engraving

This topic covers bitmap conversion, dithering algorithms, and contrast optimization for photographic and graphic engraving. Proper image prep is the primary determinant of engraved image quality.

Lesson 1 • Statistical Process Control Basics

This topic introduces control charts, Cp/Cpk indices, and sampling plans for monitoring laser process stability over time. SPC methods detect drift before defective parts are produced.

Lesson 2 • First Article Inspection and Documentation

This topic guides learners through a structured first article inspection process and the associated measurement records. Proper documentation supports customer approval and process repeatability.

Lesson 3 • Defect Root Cause Analysis

This topic links common defects such as dross, burrs, and warping to specific parameter or setup causes. Root cause identification enables targeted corrective action rather than guesswork.

Lesson 4 • Dimensional Inspection Techniques

This topic covers calipers, micrometers, CMM basics, and optical comparators for verifying part dimensions against drawings. Accurate measurement is the foundation of conformance decisions.

Lesson 1 • Cooling and Gas System Maintenance

This topic covers chiller fluid replacement, filter cleaning, gas line integrity, and nozzle wear inspection. Cooling and gas system failures cause immediate laser source damage if undetected.

Lesson 2 • Optics Cleaning and Replacement

This topic covers lens and mirror inspection, cleaning solvents, wiping technique, and replacement criteria for contaminated optics. Optics condition is the most frequent cause of degraded cut quality.

Lesson 3 • Maintenance Scheduling and Records

This topic establishes daily, weekly, and monthly maintenance intervals and the documentation system to track compliance. Consistent records support warranty claims and predictive maintenance decisions.

Lesson 4 • Motion System Maintenance

This topic addresses linear rail lubrication, belt tension, rack-and-pinion backlash, and drive motor checks. Motion system wear directly causes positional errors and poor part geometry.