Extruder clicking isn\u2019t a diagnosis, it\u2019s a symptom. It only means the filament can\u2019t go any further and the rollers are slipping. The cause may be the nozzle, the hotend or the extruder itself \u2014 and replacing parts at random is expensive. There\u2019s a simple test that answers the question in a few minutes.<\/p>\n
The extruder rollers push the filament with a certain force. If there\u2019s resistance further down, the filament doesn\u2019t move and the roller teeth grind against it \u2014 hence the typical sound and ground-down spots on the filament.<\/p>\n
Common effects you\u2019ll see in prints: under-extrusion, skipped layers, thin or broken lines.<\/p>\n
Bambu Lab\u2019s official method lets you pinpoint the problem:<\/p>\n
If the filament feeds smoothly without the hotend<\/strong> \u2014 it\u2019s the hotend or nozzle that\u2019s clogged. Go to the cold pull<\/a>.<\/p>\n If the clicking continues without the hotend<\/strong> \u2014 the extruder gears are most likely clogged. This usually comes with the same sound and visibly jumping gears.<\/p>\n What you may need:<\/strong> extruder parts<\/a>, hotends and nozzles<\/a>, printer diagram for diagnostics<\/a>.<\/p>\n This article has been checked against the official Bambu Lab documentation. Procedures and temperatures may differ for a specific printer model \u2014 check your model\u2019s page on the manufacturer\u2019s wiki.<\/p>\n<\/div>\nWhat else to check<\/h2>\n
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What to do, step by step<\/h2>\n
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Sources<\/h3>\n
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