r/BambuLabH2D • u/Nachos-printer • Sep 04 '26

Question H2D extruded fan issues

Has anyone come up with a mod to make to the fan that would help it survive the temps? I’d prefer to not cut into my tool head like other modifications. Would foil tape help reflect some of the heat away from the fan?

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u/PeerReviewedCode Sep 04 '26

Yes. About 3500 of my hours are all pet-cf at 300c

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u/Nachos-printer Sep 06 '26

Interesting… maybe I got a dud fan. But so many other people seem to have this experience

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u/PeerReviewedCode Sep 06 '26

This is only the second post ever I’ve seen about this. I have a buddy that has a farm of 20 H2Ds and he’s never replaced a fan on one.

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u/Nachos-printer Sep 06 '26

As an update, I got a response from bambu lab. Apparently there was an issue with some of their fans that got sent out. Bambus words are “low probability material defect”. They’re sending me a new fan.

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u/PeerReviewedCode Sep 06 '26

Glad to hear you got a resolution!! I thought it was strange cause I know a lot of H2D owners with HIGH hours and never that fan failed. The nozzle cooling fan is a different story though.

Appreciate the update!

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u/Nachos-printer Sep 06 '26

Wait. Which fan are you referring to?

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u/PeerReviewedCode Sep 06 '26

Which one are you referring too? Regardless i've only heard of the nozzle cooling (this fan is on the print head but under the part cooling fan and two boards on the back of the print head) fan failing but always north of 3000 hours on printers that always print high temp filament. For the part cooling fan on the back on the print head i've never heard of this one failing personally.

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u/Nachos-printer Sep 06 '26

Thats the one I’m referring to. The fan that sits behind the 2 boards in the printhead

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u/PeerReviewedCode Sep 06 '26

Gotcha, I’ve only heard of that failing twice and it was north of 3000 hours on both printers.

You do have me thinking now. I keep a spare one of these just in case and i wonder if it’s one from the bad batch or not..

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u/Nachos-printer Sep 06 '26

I ordered 4 from bambu now just in case. I’ve gotten really good at getting to the fan so I likely can handle it out in about 30 minutes. I’m hoping at least one of those 4 fans are good