Bed Levelling Calibration Hilbert Curve

This is a printer bed levelling test based on the space-filling Hilbert Curve fractal. There are many tests out there that are simpler and maybe show more, but for a task as tedious as levelling something, I thought I might as well have fun with it and print an entertaining test.

The corners have slight rounding so we can more easily see the effects of poor bed adhesion, as one of my photos demonstrates.

I also found it very convenient when the print was done to pull one end up and feel how much resistant each quadrant was giving. When I had to pull pretty hard in some spots, maybe that part of the bed was too high. When a whole quadrant came off at once, maybe that was too low.

I hope someone else finds this useful or interesting. It's a good excuse to print a fractal, even if it is very simple.

This is a reupload of a model licensed under the Creative Commons - Public Domain Dedication license.