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The nozzle is not clogged. After an adjustment, I get two to three good printed layers then the nozzle begins to lift away from the print. If I do not adjust the Z offset more negatively, then the print begins to go airborne in very small increments while extruding filament. I must babysit the print to get it finished.

A 20 mm cube (XYZ calibration cube) turns out with Z measuring 4.3 mm and X and Y both measuring 20 mm. I have tried printing a model which I have printed many times without problems in the past but now it fails to print. I have downloaded the XYZ calibration stl from Thingiverse and it fails to print without going airborne.

I have an Ender3 V2 Neo w/ BLTouch. The default Z steps is 400 mm. For calibration, I set it to 403 mm. No improvement. Then I set the Z steps to 380, 420, and 1200 mm without any change in the failed print results. The V2 Neo is only 4 months old. It has the most recent firmware but I re-flashed it anyway. No change. Then I downloaded from GitHub the mriscoc/Ender3V2S1 firmware. This firmware is awesome but it did not solve my problem. I have replaced the Z stepper motor, no change. My next step is to upgrade the motherboard from v 4.2.2 to v 4.2.7.

What are your thoughts?

Bob Ortiz
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Robert Spring
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1 Answers1

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It seems your Z-axis calibration is off. First, ensure your Z-axis steps/mm are set correctly in the firmware.

Second, ensure your BLTouch is functioning correctly. Incorrect bed leveling information might be the cause.

Third, inspect your 3D printer's mechanical parts. Loose screws or belts might cause the Z-axis to drift.

Lastly, it's possible you're experiencing an extrusion issue. Make sure your extruder is pushing out the correct amount of filament.

And if all else fails, if you ask me, I would say upgrading your controller board could be a potential solution.

0scar
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Nazanin Nasab
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