The purpose of this test is to determine how precise is your 3D printer with different dimensional tolerances. Each inside diameter varies from 0.1 to 1.0 mm (.05 mm to 0.5 mm per side). Make sure to have a caliper to measure each feature and validate it's real dimension. Which tolerance is better for your assemblies? How precise is your machine and settings? Have fun while performing this test and let me know your experiences. Printer: CR10 Smart Pro Slicer: Cura 4.8 Bed Type: PEI FDM - PLA - 1.75mm Quality: Normal 0.8 mm wall thickness / 2 lines per wall 210° hotend / 60° bed 50 mm/s (for starters) Retraction enabled (picture for reference) Fan: 100% Bedplate adhesion: skirt No Support