Colour Annealing a Keyring
(MOPA Laser)

Step by Step Tutorial

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In this tutorial, you will learn how to create stunning coloured annealing on stainless steel using a Trotec MOPA laser machine.


Preparation

You Will Need:

1x Stainless Steel Keyring

Machine Used:

For this project, you can use any machine from the SpeedMarker series. You can also use the Speedy fiber or Speedy flexx laser machines.

Important:

Depending on what alloy you're using, your results may differ from ours slightly.

To achieve different colours, the pulse width needs to be changed. Therefore, you will only achieve black markings when you use a standard fiber laser (from the SpeedMarker series or a Speedy fiber/flexx machine)


Step by Step

Step 1: Design

Firstly, import our template; Or have a go at creating an original design. Import the PDF with layers into the SpeedMark software and assign these parameters and fillings to the object.

Tip:

Define your parameters in advance:

Filling For Fill Style Line Distance [mm] Additional
Text Cross Lines (Bidirectional) 0.003 -
Letters Bidirectional 0.03 -
Lines Bidirectional 0.001 -
Dots Bidirectional 0.001 Optimise Filling
Wind Rose Bidirectional 0.001 Optimise Filling
Border None - -

Step 2: Laser Process

Now, enter the parameter settings. Remember, these can differ depending on what laser machine you are using as well as its available laser power.

Position your workpiece using border marking - this will help with accuracy!

Laser Parameter Process Power [%] Frequency [kHz]
Text Marking 50 150
Letters Marking 60 60
Lines Marking 60 189
Dots Marking 84 261
Wind Rose Marking 54 260
Border Positioning - -
Speed [mm/s] Pulse Width [ns] Passes
1000 200 1
2000 200 2
2000 8 1
2000 100 1
2000 100 1
- - -

Step 3: Post Processing

No post processing necessary. Your keyring is ready to use!



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