Is there a central repository of test files? Not just the crown but stuff like the greyscale laser test pattern, focus test things like that.
Nope. That is a good idea. I would love it if we had a better suite of test and calibration guides, along with some gcode patterns.
I’ll add it as an issue to the docs.
Maybe toss in a few links to 3d printer calibration tests people can use before printing the core