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Prusa 3D printers guides

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Prusa updates XL, CORE One L and CORE One to Gen 2 · 2026-08-13

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Prusa

Original Prusa MK4S

Build volume 250 × 210 × 220 mm · Maximum nozzle temperature 290 °C

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Task content

Comparison, parts and use guides

Troubleshooting guide

Fix an MK4S first-layer problem in the right order

MK4S first-layer calibration is automatic through Loadcell, so start with sheet preparation and mechanical conditions, not blind Z-height changes. Check the material-specific surface procedure and expansion joints; cool and power off before the instructed nozzle check, then run the LoadCell test.

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Troubleshooting guide

Diagnose an MK4S clogged nozzle without using the wrong procedure

Clog indicators include inconsistent extrusion, curling at the nozzle, gaps or missing layers and extruder clicking. The MK4S ships with a high-flow nozzle, and Prusa says the acupuncture-needle procedure does not apply to high-flow nozzles. Identify the installed nozzle before proceeding.

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