Fiber Laser Machine
Training & Guides

Rough edges on stainless are most often caused by insufficient nitrogen pressure (target 12–18 bar), incorrect focal position, or a contaminated protective lens. Check nozzle alignment, clean or replace the protective window, and verify focal offset for your material thickness.

Slow cutting on thick mild steel with oxygen typically means suboptimal focus position, insufficient oxygen pressure, or a worn nozzle tip. Confirm the nozzle is undamaged and concentric, increase oxygen pressure to 0.8–1.2 bar depending on thickness, and run a focus position test cut to find the optimum focal offset.

Nitrogen (99.99%+ purity) at 10–18 bar is the correct gas for aluminum. Nitrogen prevents oxidation and delivers bright, oxide-free edges. Compressed air produces oxidized, rough edges on aluminum. Never use oxygen on aluminum — it causes uncontrolled burning and significant dross.

Inspect the protective lens daily and replace every 1–4 weeks depending on material type and duty cycle. Cutting galvanized, coated, or reflective materials degrades lenses faster. Keep 5–10 spares in stock. A cracked or contaminated lens can destroy the cutting head if not replaced promptly.

Start with the safety interlock loop: (1) Check the chiller water flow sensor — a stuck magnetic plunger is the #1 cause of no-fire faults. (2) Confirm all doors are fully closed. (3) Check E-stop status on controller and machine frame. (4) Read the active fault code. About 90% of no-fire cases are safety interlocks functioning correctly, not a laser source failure.

Up to 6mm mild steel and 4mm stainless: 1.5–3kW is sufficient for most shops. For 6–12mm mild steel and 6mm stainless: 4–6kW. For 12–25mm mild steel and stainless up to 12mm: 8–12kW+. Rise Tek recommends buying one power tier above your current requirements to future-proof your investment and handle peak production demands.

Dross usually indicates cutting speed is too high, assist gas pressure is too low, or focus position is off. On thick mild steel with oxygen, dross often means too much power at too slow a speed. Try reducing speed 10–15%, or increasing oxygen pressure slightly and re-test with a focus test.

Yes. Rise Tek Machinery provides service support for Han's Laser, Bodor, Raytools, and other fiber laser brands in Canada. We supply consumables, protective lenses, and offer remote and on-site technical support. Submit a service request at our Education Center with your machine model and fault description.