3D Printer Noise Movement Test

This simple gcode script (my first) homes the printer, then moves the nozzle to the approximate center of the bed (for a Creality Ender 3), at X,Y,Z coordinates 110,110,10. Then it raises and lowers nozzle on the Z-axis three times, then does three sets of clockwise circles (30mm in radius), at feedrates 1000, 2000, and 4000, before returning to home.

No material is extruded, so the nozzle and bed remain unheated.

The script is intended to allow reproducible results for comparing printer