Hey!
I've been having some adhesion and levelling issues with my print bed and so I created this that shows me where on the print bed I have issues.
A bit of trial and error, change settings in those locations and I was back to printing normally in no time.
The model has small bevels around the edges for additional testing which I found useful.
Designed to fit on my bed at 200x200mm, with 1.5mm height. (Ender 3 V3 SE)
I've uploaded pictures from my test prints to demonstrate how it works.
If you need a large size, just scale it up - it's square by nature so should be able to fit most beds/plates.
The author marked this model as their own original creation.