Laser engraving on different metal surfaces

Endurance has finished a few experiments doing laser engraving on various metallic surfaces (we used an 8.5W+ laser installed on a DIY engraving machine). The conclusion is the best focal range for the G2 short focal lens is 6 mm (1/4’’). To get the optimal focus you need to follow a simple rule: in red or green goggles the size of a spot should be minimum and the light intensity is maximum.

Today we have finished a few experiments doing laser engraving on various metallic surfaces. We used an 8.5W+ laser installed on a DIY engraving machine.

First of all we wanted to define the best focal range for our short focal lens G2.
We made a few experiments cutting 5 mm wood with a single pass.
At the speed of 100, we cut 5 mm wood with a single pass with minimum charring.

So, the best focal range for the G2 short focal lens is 6 mm (1/4’’).
To get the optimal focus you need to follow a simple rule: in red or green goggles the size of a spot should be minimum and the light intensity is maximum.

Experiment 1 (plain matte steel)

The best result was achieved using speed 15-25. It takes about 3-5 minutes to make Endurance logo engraving. It takes only one pass of the laser.

Experiment 2 (Anodized aluminum with matte and with shiny surface)

The best result was achieved using speed 500-100. It takes about 20-30 seconds minutes to make Endurance logo engraving. It takes only one pass of the laser.