Ender 3 V2 under extrusion problems
This is some kind of filament stuck in the hotend tube problem. Just like &quot;heat creep&quot; as mentioned above. PTFE pipes should be checked, all parts should be carefully cleaned. I also add checking the extruder (gears, tightness) to the list. The plastic extruder can structurally loosen or break over time. I switched to metal extruder a long time ago, but metal also breaks / loosens after a while. Finally I'm using a double gear extruder without any problem. And I replaced the stock pipes with more durable PTFE and &quot;Pneumatic Fittings&quot;. Pneumatic fittings are also very important by the way.