I just completed my first print on my Ender-3 and when the print finalized itself the nozzle didn't elevate itself to clear away from the piece. I watched as the nozzle slowly lowered itself into my print and destroy it. Here is the gcode generated by Slic3r used:
; Filament-specific end gcode G4 ; wait M221 S100 M106 S0 ; turn off cooling fan M104 S0 ; turn off extruder M140 S0 ; turn off bed G91 G1 F1800 E-3 G90 G1 Z{z_offset+min(layer_z+30, max_print_height)}{endif} ; Move print head up G28 X0 ; home x and y axis G1 Y180; Remove Print Position M84 ; disable motors M300 S2600 P100; Beep ; filament used = 24040.5mm (57.8cm3) ; total filament cost = 0.0