Calibration Print

A simple, no frills calibration / stress test print.

Print without supports - 'cause that's the point :-)

Overall dimensions are 20mm wide x 40mm long x 30mm high.
The 2 vertical holes are 5 & 3 mm diameter each.
The 1/2 circle along the one side has a diameter of 10mm.
The bridge pillars are 5x5mm, the gap is 5mm and the beams are 5x5mm.
The large arch has a 36mm diameter.

The arch's test your overhangs, and the bridges test your bridging - aka your cooling.
The rest tests basic X/Y/Z calibration and extrusion.

On my machine, at 60mm/s it takes less than 30 minutes to print. At 30mm/s its about an hour.

Neither of my printer / slicer combinations can do it perfectly.

(Ideally the slicer would do perimeters from outside in, unless it detects an overhang > 45 degrees, then do inside out. If possible, never start printing a perimeter on an overhang. And also if possible, start any infill from someplace 'solid', not from the edge of an overhang.)

This thing was m