X and Y calibration model

thingiverse

I was experiencing very strong astigmatism on my printer, where circles came out as ovals regardless of whether I printed square or rectangular shapes perfectly fine. To solve this problem, I created a calibration model combining both types of shapes that I had come up with using M92 adjustments. Original dimensions are: Circle Outer diameter: 140.00 mm Inner diameter: 136.00 mm Thickness: 1.00 mm Cross Length in X and Y: 120.00 mm Width of arms: 2.00 mm Thickness: 1.00 mm Measurements should be made using a caliper directly on the COLD bed before removing it (if you have a heated bed like me). For the circle, I measured in the X direction, Y direction, and at +/-15°, +/-30°, +/-45°, +/-60°, and +/-75° from my Y axis for extra precision. Note: If your first layer is thicker than the others, make sure not to grab it with your caliper. Print Settings: Printer Brand: Printrbot Printer: Simple Black Rafts: Doesn't Matter Supports: No Infill: 100% Notes: As a calibration model, it's supposed to be printed at the same printing speed and layer thickness as what you use most on your printer.