Swiss Cheese Calibration Cube

by Kinematic Digit

(UPDATE 2/3 - I updated this file to clean up some manifold errors. The previous version prints just fine; it gave some errors on some slicers but still printed. The previous version has been replaced with this one.)The ultimate calibration and tolerance test cube. I present the Swiss Cheese Calibration Cube or SC³.This model is designed to assist you in calibrating your printer in all three axes and assist you in printing within the accuracy of many models built around popular screws, nuts and fasteners. I based many of the tolerances around Voron standards and ABS/ASA, but this cube will work with PLA and PETG as well.Please Note: Two files are included, stl and obj. Prusa Slicer will not error on the OBJ files but will auto repair the STL file and still print. You may get a stability warning; this is the bridging parts. Ignore the message and do not print with any support to ensure you stress test your printer properly.This cube has several holes in it for testing popular things like:6x3 Magnets.1 and .2 tolerances (.1 tolerance is ideal for testing PLA and PETG specifically)4mm Allan Tool tolerance (ASTM socket of 4mm, tool of 3.95mm - tool or print variations may affect if this can fit or not)SHCS M3 Screws - Countersink, passthrough (3.2mm) and self-tapping (2.9mm)Filament passthrough - 2.2mmHeat Set Insert M3-5x4M3 NutTest all the holes to see how your printer stacks up and make adjustments to get closer to tolerances. Do not worry if you're ‘close enough’; as a standard cube, you can test for dimensions, layer quality, corners and resonance. I recommend starting with those basics first before moving on to your slicer to tune it further for tighter tolerances. The self-tapping holes will be found paired with all the M3 Nuts and all the Heat Set holes. 2.9mm was chosen over 2.7mm, so this way, even if it is out of tolerance, you have a little bit of room to still test the heat sets and M3 nuts. If it really tight, forcing it on the X and Y axis will likely sep