Knowledge base

Short, practical guides from our engineers — how to pick a source, what marks on what, how to keep a machine running.

Guide 01

Choosing a laser source

Fiber vs CO2 vs UV in one minute

Metals → Fiber (1064 nm). Wood, acrylic, leather, paper, glass frosting → CO2 (10.6 µm). Plastics, glass, PCB, anything heat-sensitive or regulated → UV (355 nm). When two fit, send the part and we test both.

See marking machines →

How much power do I need?

Marking: 20–30 W fiber for serials and logos; 50 W+ for deep engraving or fast lines. Cutting: 1.5–2 kW for MS to 10 mm; 3–6 kW for thicker plate. Welding: 1.5 kW for SS to 3 mm; 2–3 kW for 5 mm and aluminium.

Which build format?

Tabletop for job shops · Enclosed when operators are untrained or the room is shared · On-fly for conveyors · Handheld for large fixed parts · CCD when parts arrive unaligned · Robotic for 3D or high volume.

All formats →

Marking area vs. detail

A 110 × 110 mm lens gives the finest spot; 200 × 200 mm is the all-rounder; 300 × 300 mm covers big parts but with a larger spot. Choose the smallest field that fits your largest job.

Guide 02

Material compatibility

MaterialFiberCO2UVNotes
Stainless / MSBest—LightBlack anneal, white or deep engrave
Aluminium (anodised)BestCoating onlyGoodBright white mark on anodising
Brass / copperGood—LightHigher power or MOPA for contrast
ABS / PA (dark)GoodFairBestFiber colour-change; UV for no foaming
PET / PC / clear plastic—FairBestCold mark, no melt
Wood / MDF—BestFairEngrave and cut
Acrylic—BestFairFlame-polished cut edge
Glass—FrostBestUV for crack-free codes
Leather / fabric—BestFairSealed edges on cut
Paper / cardboard—BestGoodOn-fly coding
PCB / FR4Fair—BestMicro text and 2D codes
Ceramic / tileFairGoodGoodPattern and code marking

"Best / Good / Fair / Light" are starting points — coating, colour and finish change results. We always test your actual part.

Guide 03

Marking types explained

Annealing

Heats stainless or titanium below melting point to form a black oxide. No material removed, corrosion-resistant, ideal for medical UDI.

Engraving

Removes material 0.05–1 mm deep. Survives paint, wear and abrasion — tools, dies, castings, VIN plates.

Etching / surface mark

Shallow melt that changes texture and contrast. Fastest option for serials and logos on most metals.

Colour change (plastics)

Fiber or UV alters pigment in the plastic — white on dark ABS, dark on light PA. No depth, no dust.

Coating removal

Strips paint, anodising or ink to expose the base metal — day/night buttons, coated panels.

Colour marking on stainless

MOPA fiber sources tune pulse width to produce blue, gold, red and green oxides on stainless — branding and jewellery.

Guide 04

Files, fonts & software

Accepted file formats

Vector: DXF, AI, PLT, SVG · Image: BMP, JPG, PNG, GIF, TIF · Fonts: TTF, SHX · Data: Excel / CSV for serials, batches and variable text.

Preparing artwork

Export vectors as outlines (no live text), 1:1 scale, black fill / no stroke. For images use 300 dpi greyscale; the software dithers for engraving.

Barcodes & 2D codes

Code 128, EAN, QR, Data-Matrix and GS1 are generated in-software with verification grading. Minimum cell size 0.25 mm on fiber, 0.1 mm on UV.

Serial numbers from Excel

Point the job at a column; the machine increments per part and can log each mark with timestamp for traceability.

PLC & line integration

USB standard; Ethernet, RS-232 and 24 V I/O optional for start/stop, encoder sync (on-fly) and part-present sensors.

Guide 05

Maintenance schedule

DailyWipe lens & protective windowLint-free wipe, isopropyl alcohol. Check fume extraction.
WeeklyClean the work table and railsVacuum debris; check air-assist pressure and nozzle.
MonthlyInspect fibre cable & connectorsNo tight bends (< 200 mm radius). Check chiller water level and filter (CO2 / welding).
QuarterlyFocus check & power testRamp test on a standard plate; recalibrate Z if depth drifts.
YearlyAMC service visitGalvo calibration, source health check, electrical inspection, software update.

Ask about an annual maintenance contract →

Guide 06

Laser safety basics

Goggles match the wavelength

1064 nm (fiber), 10.6 µm (CO2) and 355 nm (UV) each need their own rated goggles. We supply the correct pair with every machine.

Enclosed = Class 1

An interlocked enclosure makes the system Class 1 — no goggles needed for bystanders. Open tabletop and handheld units are Class 4: controlled area, signage, trained operators.

Fumes

Plastics, PVC and coated parts release fumes — always run extraction with a HEPA + carbon filter. Never mark PVC without extraction.

Handheld welding

The gun fires only when the nozzle touches metal; still use a welding screen, gloves and 1080 nm goggles. Keep flammables 3 m away.

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