Fabrication services
MOPA Fibre Laser Colour Engraving for Metals
A MOPA fibre laser lets us set pulse duration, frequency, power, speed and line spacing independently. That control makes possible something a standard fibre laser cannot do reliably: engraving colours on stainless steel and titanium with no inks, paints or coatings.
The colour comes from a thin oxide layer the laser forms on the metal surface. Depending on its thickness, light is reflected as gold, copper, purple, blue or green. By combining different frequencies and parameters we achieve a palette of colours on a single piece, as well as deep blacks, matt whites and deep engraving.
The machine has an object-detection camera that recognises the position and orientation of each part and places the design on it automatically, plus a conveyor belt that feeds the marking area continuously. From a single sample piece to large production runs, every unit comes out the same.
What this service includes
MOPA fibre laser colour engraving on metal.
- Colour engraving on stainless steel: golds, bronzes, purples, blues and greens.
- Colour engraving on titanium, with brighter, more intense tones.
- Palette tests: colour matrices with different frequencies, pulses and speeds on your material.
- High-contrast black marking and matt white without damaging the surface.
- Deep engraving and relief on metal for long-lasting parts.
- Marking on anodised aluminium, brass, copper and engineering plastics.
- Logos, illustrations, gradients and colour images on plates and objects.
- Serial numbers, QR codes, Data Matrix and variable data per unit.
- Automatic camera-based part detection: positioning with no templates or jigs.
- Continuous production with a conveyor belt for large runs.
How we work
- 1
Send us your design, part or a sample of the metal
- 2
We make a test matrix and choose the colours with you
- 3
We lock the parameters and approve a first unit
- 4
We produce the run with camera and conveyor, inspect and dispatch
Materials we use
Stainless steelTitaniumAnodised aluminiumBrass and copperCarbon steelEngineering plastics
See the full materials catalogueMachines behind it
MOPA galvo fibre laserObject-detection cameraConveyor beltRotary axis for cylinders
See the full machinery listTypical projects
MOPA fibre laser colour engraving on metal.
Stainless steel or titanium jewellery, watches and accessories
Stainless bottles, flasks and corporate gifts
Instruments, tools and industrial parts with traceability
Metal keyrings, badges and merchandise in long runs
Identification plates, cutlery and kitchenware
Free resource
MOPA colour sample on your metal
We prepare a colour matrix on stainless steel or titanium, with your logo engraved, so you can see the achievable tones in hand and choose before production.
- Colour matrix with its parameters
- Your logo engraved in the chosen colour
- Quote per unit and run size
Reply within one business day
MOPA Fibre Laser Colour Engraving for Metals
A MOPA fibre laser lets us set pulse duration, frequency, power, speed and line spacing independently. That control makes possible something a standard fibre laser cannot do reliably: engraving colours on stainless steel and titanium with no inks, paints or coatings.
We answer your doubts
Frequently asked questions
How is colour achieved without ink?
The laser forms a very thin oxide layer on the metal surface. Its thickness determines which colour light reflects. We control it by adjusting frequency, pulse duration, power, speed and spacing.
Which metals can be colour engraved?
The best results are on stainless steel and titanium. On other metals we do black, white or deep marking, but not a stable colour palette.
Which colours can you achieve?
Golds, bronzes, coppers, purples, blues and greens, plus black and grey. The exact tone depends on the alloy and surface finish, so we always run a test before production.
Is the colour durable?
It is part of the metal surface and does not peel like paint. It withstands normal use well; strong abrasives or aggressive chemicals can alter it, as with any surface finish.
Is the colour consistent across a run?
Yes, provided the material comes from the same batch and finish. We lock the parameters after testing, and the camera and conveyor keep position and pace on every unit.
What is the detection camera for?
It recognises each part in the work area, even if rotated or shifted, and places the engraving exactly on it. It removes the need for jigs and greatly speeds up runs.
What run sizes can you handle?
From one sample piece to thousands of units. With the conveyor belt, parts flow in and out continuously, lowering the unit price on large runs.
Can I send you my own parts?
Yes. We work with customer-supplied products; we will ask for one or two spare units to fine-tune the parameters.
Can't find your answer? Write to us and we'll reply within one business day.