First layer, 0,2mm clearance, flow, pressure advance and elephant foot tester

By printing this you can test multiple settings of your printer. I remixed it to only have one square instead of 9, reducing time and filament use.

Check the first layer lines, the clearance between the 2 squares (0,2mm), flow rate, pressure advance on the corners and elephant foot effect on the fist layers.

 I remixed it to only have one square instead of 9, reducing time and filament use. just the 0,2mm clearance squares.