When my printer gets to the end of the vibration test it makes this noise. It only makes it one time and prints fine. I’ve tightened all 5 screws on the hotend assembly and made sure the nozzle is seated. I’ve done a couple cold pulls. Last week there was a piece of old filament stuck in the extruded so I took everything apart and cleaned it making sure the cutting blade was in its slot before reassembly. Hopefully someone will know where to look next.
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did you check the extruder gear?
Start ruling things out.
- Remove the contraption on top of the print head wrapped around the four PTFE tube inlets.
- Disconnect all the PTFE tubes on the print head.
- Remove the print head cover (front panel) and the custom rotating disc.
Connect a spool externally and repeat whatever you did to create the video.
Questions:
- Does it do the same?
- Are sure the sound is coming from the print head?
- What does the LCD screen say when it makes the noise, ie: what stage of the process is it at, including and temps of the nozzle and bed.
- Have you recently changed the nozzle?
- Have you recently changed the build plate?
- Is the build plate correctly positioned and aligned?
- Does the nozzle have any obvious damage?
- Does the build plate have any obvious damage?
- Is the build plate self-levelling still enabled? (If not, turn and try again.)
- What filament:
- is (was) installed?
- type (PETG, PLA, TPU etc)?
- what sub-type (+, HF, HS, 90A etc)?
- who manufactured it (Bambu Lab, eSun etc)?
- Does the sent job match the installed filament?
I look forward to answers.
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When I reassembled after removing the piece of jammed filament last week I apparently had the tensioner too tight. I backed off a hair on the screw for the extruder idler lever and it’s perfect now.
Thanks everyone for the suggestions.
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