FC-6012 EXT Technical Support

Support for the FC-6012 EXT fiber cutter: manuals and downloads, the first checks for cut-through, edge quality, and assist gas, and the step-by-step guides.

Manuals & guides

Owner’s ManualPDF · 1.6 MB

The manuals linked above cover this machine.

Start here

Pick your symptom.

The three common paths for fiber-cutter support: not cutting through, edge quality, and assist gas or pierce.

Symptom

Not Cutting Through

A partial or no cut usually traces back to the nozzle, focus height, assist-gas pressure, or pierce settings.

Inspect the nozzle and protective lens for damage or debris.
Confirm focus height and nozzle standoff.
Verify assist-gas pressure and pierce timing for the thickness.

Cutting Guide

Symptom

Edge / Cut Quality

Dross, burr, or a rough edge points to the gas, feed rate, power, or a worn protective lens.

Match gas type and pressure to the metal.
Tune feed rate and power together.
Replace the protective lens if it is fogged or spotted.

Quality Guide

Symptom

Assist Gas & Pierce

Gas choice and pierce timing set the cut. Oxygen, nitrogen, or air each suit different metals and thicknesses.

Set oxygen, nitrogen, or air to the metal type.
Confirm pressure at the head, not just the regulator.
Tune pierce timing to the material thickness.

Gas Guide

Guides & videos

Support references.

Direct support resources for fiber cutting — not a generic blog feed.

Fiber Power & Assist Gas

How power and assist-gas choice drive edge quality and cut speed on metal.

Open Guide

Nozzles & Consumables

Keep nozzles, the protective lens, and ceramic in spec for clean, repeatable cuts.

Open Guide

Common questions

FC-6012 EXT FAQs.

Frequent questions for this specific model.

Which manual covers my FC-6012 EXT?

Use the operator’s manual linked at the top of this page — it covers the FC-6012 EXT, including safety, operation, and maintenance.

What assist gas should I use?

As a general rule, oxygen suits mild steel, nitrogen suits stainless and aluminum for clean edges, and compressed air is an economical option on thinner material. Confirm the right gas and pressure for your thickness in the fiber power guide.

Why isn’t my cutter cutting all the way through?

Check the nozzle and protective lens first, then focus height, assist-gas pressure at the head, and pierce timing for the thickness. Worn consumables are the most common cause.

Need a technician?

Contact Boss Laser support.

Include your serial number, the metal and thickness, the gas and settings, photos of the cut edge, and which quick checks you completed.

Contact Support