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"Homing, please wait..." R"Calibrate Z-Offset" S1
M208 Z-2 S1			; allow movement below Z0
G1 X175 Y175 Z8 F4000 ; move to center of bed
M558 P0
G30 S-2
M208 Z-.5 S1			; allow slight - Z so zoffset can work
G1 Z10 ; drop build plate
G1 X10 Y10 F4000
M558 P1 C"!^io4.in" H5 F500 T10000	; restore probe type
G31 P500 X0 Y0
M291 P"Z-offset calibration complete! " R"Calibrate Z-Offset" S1 T3
M500 ; save results
M501 ; load new data