3D Printer Calibration Tester

Here's a calibration tester that tests overhangs with the 43 degree angle ellipse, filament retraction with the 2 small circular pillars, X & Y accuracy with the triangle and sharp corners and curves. It also tests for warping. Use this with your print settings for the plastic being used to fine tune your 3D printer!

Note:
I would suggest scaling the size down if you want to print this relatively quickly; it took around 1 hour to print this calibration tester.