Laser Alignment Tools
thingiverse
Partially remixed laser alignment tool. Part 2 was modified form the original to be a bit thicker/taller, with no through holes, and I added an indent for a 60mmx10mm neodymium magnet. Part 1 is my own creation. It's a simple L-square. The slots in the top are for two 60mmx10mm magnets. With magnets glued in, these tools work perfectly for setting up repeatable cuts/marks on your laser engraver. The magnets hold the tools down to the honeycomb bed, so they won't move. Magnets are this: https://www.amazon.com/gp/product/B078KTLWQ9 I secure the magnets with superglue, and they fit flush. The included tape would probably work too, but then they wouldn't slot into the finished part as nicely.
With this file you will be able to print Laser Alignment Tools with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Laser Alignment Tools.