Laser Focus Depth Step Gauge

Information

      . These laser focal depth gauges were made in Illustrator, so when importing the cdr file.

There are a few different ranges for different size lenses:

4mm – 20mm
21mm – 37mm
8mm – 24mm
7mm – 14mm
5mm – 15mm
If you’d like to see a different focus depth range, let me know and I’ll throw it in the zip file.

There’s also a little arrow shape so that you can insert your default focal length. What I do is just put the arrow on the depth where the laser focus has the tightest line. If I’m engraving, the laser should be focused to the top of the material so the arrow would be the focus depth that you’re going for. If I’m cutting (for example 3mm material), I’ll subtract 1.5mm to that number so that the laser focuses in the center/middle of the 3mm material.

The steps are in 1mm increments but it’s easy enough to kind of gauge half of a millimeter by leaving a little gap above each focal step.

I also put magnets in some of my test cuts. You can do the same by measuring your magnet diameter, and then engraving a circle slightly larger than that in the corner of the depth gauge. I’m not sure what I like better yet; hanging them or just sticking them on the side of the laser.