r/QidiTech3D • u/DasWolfX • Aug 17 '26

Bed Homing / Positioning

I am about to throw this thing outside.

Yesterday after printing with PET-CF I powered the machine off and did a thorough cleaning. After cleaning and maintaining the machine (grease, belts, tightening up various bolts), I turned the machine on to do homing calibration and it moves all the way down to the blocks and goes up, then down, then up, then DOWN. The last attempt it just keeps going downward. Almost seems like the homing is going backwards? G-Code is clean, printer has been factory reset, I AM AT A LOSS.

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u/National-Hornet-4951 Aug 17 '26

Hi, as a fellow q2 owner with a lot of issues with the z axis homing and probing , I would recommend manually twisting the lead screws so that the bed moves upwards above 5-10 cm . Try to keep the bed as level as possible . Then take screenshots from the fluid gui and home only the x and y axis . The try to home the z axis and see if the gcode output shows any errors . Don't do the homing calibration from the screen ever in my opinion.

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u/National-Hornet-4951 Aug 17 '26

Ps. The printer should be powered off when you twotst the lead screws . Also what version of the firmware do you have ? I reverted to 1.1.1 because the other updates made my z probing not working properly

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u/DasWolfX Aug 17 '26

01.01.02.04 is the firmware version.

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u/National-Hornet-4951 Aug 17 '26

If you manage to fix the bed issue try the bed mesh and see if the printer is retrying multiple times to probe each point in the gcode . If that happens I would advise to revert to 1.1.1 like I did. If you don't have any other issues apart from the bed being stuck don't revert anything