Ender3 Bed Level Calibration Pattern

This file is designed to help you dial in your bed level so that you can get more reliable prints every time! This file and instructions can be used with just about any FDM 3D Printer but I'll reference the Ender3 since it is very common and that is what I am using.

About the model:
This model contains 6 concentric squares. The largest is 150x150mm and they step down in 10mm increments until the smallest square which is 100x100mm. Each square is .4mm wide and .4mm tall. The corners are rounded to prevent the machine from starting and stopping in the corners, which tends to deposit additional material that can be misinterpreted as needing adjustment.

Note: Patience is very important when it comes to calibration. Do not rush and make too many adjustments in a short period of time, you can end up chasing your tail this way. It is best to make a small adjustment then allow the printer to traverse 1-2 axes before making another adjustment. You will likely have to abort and restart t