A1

Bambu Lab

A1

570 positive 5 neutral 107 negative

Based on 682 Reddit mentions

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A1 melting safety risk

TLDR: A component called a NTC thermistor on the AC board can overheat and catch fire. In some cases it melts through the bottom of the A1. 3D Musketeers have collected 70 reports of this problem. BambuLab remains silent on the issue. If you run a A1 please place it on a non-flammable surface.

Viking4269 in r/BambuLab

December 26, 2025 9:11 PM

286

Gamers Nexus wants to buy your A1 printer if it has caught fire for their investigation on the NTC thermistor issue.

none of them have caught fire Aged like milk in just a few minutes https://www.reddit.com/r/BambuLab/comments/1tgt4mz/this_has_to_be_the_worst_a1_fire_ive_seen_so_far/

Azaphrael in r/BambuLab

May 19, 2026 5:52 PM

111

This has to be the worst A1 fire I've seen so far

I saw this not too long ago on Instagram. I can basically guarantee that there will be another recall. For some reason, the A1, compared to the rest of the entire Bambu line, is extremely susceptible power problems, thus leading to fire concerns. I got my Bambu Lab A1 LONG after the first recall (as

...

SpoiledChamp in r/BambuLab

May 18, 2026 6:04 PM

31

A1 NTC failure

Another A1 — u/BambuLab : please address this asap, the A1 community deserves answers re: this clear safety issue. u/mobius1ace5 — another one ! To all who aren’t aware of this issue with the a1, please search ‘A1 fire’ in this subreddit

new_guy9000 in r/BambuLab

December 22, 2025 1:10 PM

22

Bambu Lab owners be all like:

/uj Can I just remind the Bambu owners furiously downvoting this that we're in r/3DPrintingCirclejerk and not r/VerySerious3DPrinting. It's intended purely as a joke about the A1s and their propensity to melt and occasionally catch fire, not a actual statement of my opinion. Example here: https://ww

...

snacktivism in r/3DPrintingCirclejerk

September 16, 2025 10:56 AM

39

Another Potential Fire Hazard..

There have been a lot of these near fires lately: https://www.reddit.com/r/BambuLab/comments/1n8hu1s/why_did_my_a1melt/ https://www.reddit.com/r/BambuLab/comments/1mfjrgb/bambu_laba1_melts_a_hole_through_itself/

Viking4269 in r/BambuLab

September 25, 2025 12:47 PM

28

H2D/A series 0.2 nozzles have manufacturing defects (explosion inside H2D video)

"I’m mainly writing this post because BambuLabs ignored me when I first opened a ticket about this when I noticed the exact same problem on my a1 mini. They wouldn’t acknowledge the problem and they wouldn’t replace it. Hopefully this time it’s different." if senpai won't notice you, i'm sure the pe

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look_at_my_cucumber in r/BambuLab

April 10, 2025 10:44 PM

90

How do I know if my NTC is good?

You have the older one. It looks fine now, but you'll want to keep an eye on that for thermal stress / cracks / wear and tear / etc. The updated version looks like a straight bar, without the round black component https://www.reddit.com/r/BambuLab/comments/1q1git2/new_a1_without_the_failing_ntc_thermistor

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issue9mm in r/BambuLab

May 21, 2026 12:52 AM

6

How am I ever going to be able to print PETG again if the Bambu™Lab™Tinker*Free™ filament is not available???

/uj That type of people are the ones who can't be bothered to put even a minimal effort in researching what they're buying, and Bambulab being the brand usually recommended for/by beginners, there's a lot of overlap of its customers with that type. The other day I read about a guy who had just bough

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StickAtSea in r/3DPrintingCirclejerk

March 6, 2026 6:14 PM

6

bambu labs sale for a1

wait, just scrolled a bit and saw two different issues with bambu labs a1 just below my post lol: one blowout and other ntc failure something (i dont understand it). is it a issue with bambu labs or just the seller (wol3d in both cases ig) is bad. pls suggest if i should go for a different brand/mod

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Revolutionary_Rich40 in r/3dprintIndia

May 7, 2026 2:51 PM

4

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