Original Prusa i3 MK2 bed test

This is a simple bed test for Original Prusa i3 MK2. Run it after "V2Calibration.gcode" to ensure your first layer is perfect across the whole print area.

The STL prints in one layer and allows you to easily fine tune your machine using live adjust Z option. Print at slower speed and keep an eye on the lines - adjust Z distance if they appear too flat, or don't stick to the bed properly.

This test won't fully cover the print area - I've trimmed 5 mm on each side to make room for skirt a