Private on-device repair evidence
Bowden Coupler Slipping or PTFE Tube Pulling Out
Replace worn coupler teeth or damaged PTFE, fully seat the tube against the internal stop, install the locking clip, and remove excessive feed resistance.
Not started0 of 8 stepsNot yet saved
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Controlled test history
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Step completion
- 1Unload filament and cool the hotend.Not completed
- 2Remove the tube using the correct collar procedure.Not completed
- 3Cut the tube end square with a sharp PTFE cutter if permitted.Not completed
- 4Inspect the coupler and replace it if teeth are worn or uneven.Not completed
- 5Seat the tube fully against the internal stop while the hotend is prepared according to the manufacturer method.Not completed
- 6Install the retaining clip.Not completed
- 7Check spool drag, bends, sensor path, and retraction values.Not completed
- 8Mark the tube and run a retraction test to confirm it no longer moves.Not completed
Observations and winning values
No notes recorded.
Verification test
- Model
- 100 mm extrusion and thin-wall test
- Setup
- Use the same nozzle, material and hotend temperature planned for the print.
- Pass
- Flow is smooth and the wall is continuous with stable width.
- If unchanged
- Clicking, gaps, pulsing or inconsistent line width remains.
Matched next step
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