Nozzle size change to 0.2

Hi,

I changed my nozzle size from 0.4 to 0.2. In the printer.cfg under the item “extruder” I also adjusted the nozzle size. Unfortunately I always get a certain error when printing and also z offset calibration. I also adjusted the nozzle in the slicer. What else do I have to do?

Error:
Move exceeds maximum extrusion (0.577mm^2 vs 0.160mm^2)

See the ‘max_extrude_cross_section’ config option for details

This error happens to save your material (to avoid that you tried to extrude more than you capabability and having an issue with your extruder, or nozzle). Maximum Extrusion = 4.0 x Nozzle_Diameter² (so here, it’s 0,160mm²). That is a security included in klipper (for sure, you can bypass it but i am strongly recommand to do not doing that).

I am not a specialist but maybe you have to check the extrusion width in your slicer (if you asking a width of 0.48 with a nozzle of 0.2, that is very too big…). But maybe it’s another less obvious parameter like Volumetric Speed (very too optimistict in the default parameters of the slicer provided by Sovol) or in PRINT_START command.

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