Each year, Make magazine puts the latest crop of 3D printers through a rigorous set of tests to help determine how they stack up against each other. 2015 marks our fourth year of testing and we have continued to refine the models we use to judge the machines. You can find out more about Make's 3D printer testing by reading Make Vol 48.Each of these models is designed to test a different aspect of a FFF/FDM 3D printers performance. For best results print each design individually to prevent interference from other models. Stay tuned for a full guide on how to score these models on your printer at home.These models are based on the great founding work of Andreas Bastian with his 2015 testing probes https://www.youmagine.com/designs/make-2015-3d-printer-shoot-out-test-geometries.Models:Vertical Surface Finish - Tom BurtonwoodHorizontal Surface Finish - Matt StultzDimensional Accuracy - Matt StultzOverhangs - Andreas BastianBridging - Andreas BastianNegative Space Tolerance - Andreas BastianRetraction - Andreas BastianSupport Material - Matt StultzZ Wobble - Andreas Bastian