To keep filament feeding smooth, it is recommended to clean the PTFE tube after the extruder has accumulated approximately 10,000 feeding cycles. This number represents a suggested maintenance interval and does not indicate that the part is damaged.
Since different users vary in their print models, materials, and filament change frequency, 10,000 cycles cannot be directly converted into a fixed print duration. It is recommended to inspect and clean the tube periodically based on actual usage.
| Usage Scenario | Recommended Inspection Frequency |
| General home users | Inspect once every 3–6 months |
| Users who print for extended periods daily or frequently perform multi-color filament changes | It is recommended to inspect earlier, advancing to monthly cleaning. |
| Users with high print frequency | This can be treated as a routine maintenance item; inspect once a week or after each print job involving long durations or frequent color changes. |
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