With the Z axis at zero position, as in Step 3. c, use the Z axis manual jog control to bring the hot end nozzle closer to the build platform in 1mm steps. Arguments: If no arguments are provided, the machine will home all 3 axes. This will let you adjust the Z to a negative number for your offset. Want to print on top of an existing object? #define Z_SAFE_HOMING. Make a note of the total of 1mm steps made for the home offset value. // // With this feature enabled: // // - Allow Z homing only after X and Y homing AND stepper drivers still enabled. Add 2 // in front of the MIN_SOFTWARE_ENDSTOP_Z line in your Configuration.h file as shown below. Try using Z offset to adjust where your 3D printer starts printing. You can also specify which exact axes you want to home by adding an X, Y, or Z to the command. Keep a count of how many 1mm steps, and stop when you get the nozzle about 1 to 2mm away from the platform. Homing is required before G29, M48, and some other procedures.. Reason is simply to cause no collisions. // - Move the Z probe (or nozzle) to a defined XY point before Z Homing when homing all axes (G28). Sounds simple, but what if are by accident near the top. G28 disables bed leveling. If homing is needed the LCD will blink the X Y Z indicators. The Z axis moves up for positive moves and down for negative moves. January 2017 you can set homing to raise z before homing. The home position on a CNC machine is a static, repeatable position. Notes. To write the firmware yourself or using Repetier firmware, you need the old settings. This is also a useful way to quickly move one axis out of the way, which may be useful at the end of a print so that you can remove your part. If you have no z max end stop just make sure never to move that much up. Having trouble getting your prints to stick? To get these, connect the printer via USB, connect it with a software like Repetier host and send M503 to … Hier relevant vermutlich: Ender 3 mit MKS Gen L, TMC2208, BLTouch v3, Marlin 1.1.9. If you have a z max end stop as well, that would catch the up move simply by triggering and you are safe. // - If stepper drivers time out, it will need X and Y homing again before Z homing. G28 – Perform Homing Routine. #define HOMING_FEEDRATE_Z (8*60) #define EEPROM_SETTINGS. Follow with M420 S to turn leveling on, or use RESTORE_LEVELING_AFTER_G28 to automatically keep leveling on after G28. Der BLTouch ist an einem Petsfang links montiert, trifft also bei klassischem Homing nie das Bett. including homing.. Ie homing Z should not move X or Y ... Maybe a video? 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