![Keychain with engraved metal tags made using Trotec laser marking technology](/static_processed/47d290a3620add1412509469647e0bb2/keychain-with-engraved-metal-tags-made-using-trotec-laser-marking-technology.jpg?{"image":"https://backend.troteclaser.com/static/images/knowledge/diy-samples/keyring-mopa/keyring-mopa-laser.jpg","edits":{"resize":{"width":1280,"height":640,"fit":"cover"}},"outputFormat":{"format":"webp"}})
Color Annealing keyring with MOPA-Laser
Learn in this tutorial how you can create colored annealing on stainless steel with a MOPA laser.
Preparation
Required material
Stainless steel key ring
Machine used
- SpeedMarker 700
- 20 watt MOPA
- f254 lens
You can use any other machine of the SpeedMarker series, Speedy fiber or Speedy flexx.
Important
Depending on the alloy, the results on stain less steel can be different than the one shown in this sample.
To achieve different colors, the pulse width has to be changed. Therefore you only achieve black markings when using a standard fiber laser of the SpeedMarker Series, a Speedy fiber or Speedy flexx.
Step by step
![Trotec laser software interface linking PDF layers to keyring color annealing parameters](/static_processed/fb6acc52907d45f7e9066984f22cf0ac/trotec-laser-software-interface-linking-pdf-layers-to-keyring-color-annealing-parameters.jpg?{"image":"https://backend.troteclaser.com/static/images/knowledge/diy-samples/keyring-mopa/pdf-import-laser-software-speedmakr.jpg","edits":{"resize":{"width":650,"fit":"cover"}},"outputFormat":{"format":"webp"}} "pdf-import-laser-software-speedmakr.jpg")
Step 1: Design
Import our template or create your own design. Import the PDF with layers into SpeedMark and assign parameters and fillings to the object.
Tip:
Define the 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 | Optimize filling |
| Wind rose | Bidirectional | 0.001 | Optimize filling |
| Border | None | - | - |
![Metal tag engraved with compass and quote using Trotec laser marking machine](/static_processed/504af905224504a2b0f3dea3b0bf96ff/metal-tag-engraved-with-compass-and-quote-using-trotec-laser-marking-machine.jpg?{"image":"https://backend.troteclaser.com/static/images/knowledge/diy-samples/keyring-mopa/mopa-laser-process.jpg","edits":{"resize":{"width":650,"fit":"cover"}},"outputFormat":{"format":"webp"}} "mopa-laser-process.jpg")
Step 2: Laser process
Now enter the parameter settings. They can differ depending on the laser machine used and laser power available.
Position the work piece using the help of border marking.
| 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 |
| - | - | - |
![Laser-engraved metal keychain with compass design made using Trotec laser marking technology](/static_processed/5ca7f7d964e22e11a05d7eb6a8901ab1/laser-engraved-metal-keychain-with-compass-design-made-using-trotec-laser-marking-technology.jpg?{"image":"https://backend.troteclaser.com/static/images/knowledge/diy-samples/keyring-mopa/engraving-colours-mopa-laser.jpg","edits":{"resize":{"width":650,"fit":"cover"}},"outputFormat":{"format":"webp"}} "engraving-colours-mopa-laser.jpg")
Step 3: Post processing
No post processing necessary.
![Trotec Speedy 400 CO₂ laser engraving machine with transparent lid on caster wheels](/static_processed/5b58a61a467804661df93e96a66f70dc/trotec-speedy-400-co-laser-engraving-machine-with-transparent-lid-on-caster-wheels.png?{"image":"https://backend.troteclaser.com/static/images/Laser_Machines/Speedy_Series/laser-engraver-speedy-400-left.png","edits":{"extract":{"top":142,"left":497,"width":933,"height":393},"resize":{"width":650,"fit":"cover"}},"outputFormat":{"format":"webp"}})
![](/static_processed/39b137145fe3b080cdb057970b3d2919/contact-ferdinand.jpg?{"image":"https://backend.troteclaser.com/static/images/contact/contact-ferdinand.jpg","edits":{"resize":{"width":194,"height":194,"fit":"cover"}},"outputFormat":{"format":"webp"}})
