Finnish Company Develops Laser That Can “Paint” Colors Onto Metal!

Via Core77

Finland-based Cajo Technologies has figured out how to use a laser to burn colors into different materials. “Our patented technology creates extremely precise, permanent and practically everlasting marking or colour patterning on almost any material without additives or pigments,” the company writes.

Like you, I’m wondering how the heck this works–and the company ain’t saying. All they’ll reveal is that

[Our] color patterning and marking method is based on a unique innovative application of the traditional laser beam. [It] alters the surface structure of the material, and no additives or pigments are needed. The method allows for extremely precise, permanent and practically everlasting colour patterning on almost all materials.

See more

528853 81 56917 TxvOjTurp jpg

Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.

Join 7,500+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython in 2018 – Python on Microcontrollers is here!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

Maker Business — Fewer startups, and other collateral damage from the 2018 tariffs

Wearables — Light as a Worbla feather

Electronics — How to make your own magnetic field probe!

Biohacking — The State of DNA Analysis in Three Mindmaps

Python for Microcontrollers — One year of CircuitPython weeklies!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !


  1. Could it be a game changer in Automotive painting?

  2. Looks like this is a process similar to tempering steel. The colors in the sample match very similar to the colors that appear when an oxide layer is built up at specific temperatures of metals like steel and titanium (anodizing).

  3. It’s temperature control. Steel blues nicely and repeatably to a certain color based on temperature. Google for “steel bluing temperature chart” for a number of interesting discussions.

    The really important and impressive bit is that they achieved this kind of localized temperature control. They need to heat without cutting. I suspect that different colors take different amount of time.

Sorry, the comment form is closed at this time.