...
This is described on the Laser4DIY Assembly page.
As a final step, the laser has to be taken into operation on fine tuned: Laser4DIY Laser Source: First Light and Fine Tuning
Producing PCBs
When you have completed building the device, you can start making PCBs! Here is our tutorial on how to do that: Using Laser4DIY for Prototyping PCBs
...