While the nozzle will wear, it's not significantly more than normal use. Hardened nozzles can help, but transmit heat less effectively. Replacement tips are literally about $1.50 each (BIQU 3D-M6 0.4mm Brass Extruder Nozzle Print Head for 1.75mm Filament 3D Printer (Pack of 5pcs) ) super easy to replace, and frequently cheaper/easier than cleaning.
FYI: I ended up ordering theses:
https://www.amazon.com/gp/product/B01J3BB000/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
They're slightly longer than the original, but work great. No changes are needed to use them, though the extra length will take a few mm off the max Z height.
If you plan on maxing out the Z height, change setting in your slicer from 120mm to 117.
| Info | Details |
|---|---|
| Amazon Product | BIQU 3D-M6 0.4mm Brass Extruder Nozzle Print Head for 1.75mm Filament 3D Printer (Pack of 5pcs) |
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BIQU 3D-M6 0.4mm Brass Extruder Nozzle Print Head for 1.75mm Filament 3D Printer (Pack of 5pcs) https://smile.amazon.com/dp/B01J3BB000/ref=cm_sw_r_cp_apa_i_HpYVCbAT77F1A