I have desinged a few test models and hears what you need to know about them:
Print Time: 20min
Size: 15x15x15mm
It tests how acuate the X,Y, and Z belts are. After it prints you need to mesure it.(with something more acuate than a ruler)
Print Time: 40min
Text: 0.5mm - 1mm - 1.5mm - 2mm (also on the model)
Its not super useful but it tests how low your nozzle is to the buldplate and how deep the text needs to be. (only when its printed on the bottom of the model)
Print Time: 7min
Base of cone: 5mm
A simple fast test to see how well your printer retracts / how stringy your filament is.
Print Time: 40min
Total curve: 80°
Goes up by: 10°
It tests how much of a overhang your printer can print.
Print Time: 15min
Hole size: 5mm - 4mm - 3mm - 2mm - 1mm - 0.75mm
Print this this to figure out the size of hole your printer can print with out it closeing up into a solid object.
Print Time: 30min
Bridges: 30mm - 40mm - 50mm - 60mm - 70mm - 80mm
It tests how far your printer can print with out printing on top top of a layer. (as long as it connects to a platform after)
The author marked this model as their own original creation.