CR-10 Laser Alignment Guide

I got a magnetic laser engraver recently for my CR10 and I wanted a way to reliably place the laser point. I also needed a way to consistently place material on the bed so that I could cut things accurately.

This guide slips over the front left corner of my bed and has a nice square corner that is 10mm up and over from the target point. This allows me to lay things out in my laser software ( https://lightburnsoftware.com/ ) more consistently.

**NOTE:** I use a mirror tile as my print bed so it may be non-standard in size. The thickness is 7mm. Feel free to remix for your bed thickness.