T0 M291 P"Press ""OK"" if you would you like to calibrate the Z-offset for this Tool Cartridge." R"Calibrate Z-Offset" S3 M291 P"Make sure your nozzle is free of debris. Press ""Cancel"" if you need to stop and clean the nozzle." R"Calibrate Z-Offset" S3 M291 P"Homing, please wait..." R"Calibrate Z-Offset" S1 M98 P/sys/homeall.g M208 S1 Z-2 ; allow movement below Z0 G1 X150 Y150 Z8 F2000 ; move to center of bed M558 P0 G30 S-2 M500 ; save results M501 ; load new data M208 S1 Z0 ; disallow movement below Z0 G1 Z10 ; drop build plate M291 P"Z-offset calibration complete! " R"Calibrate Z-Offset" S1 T3