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Tom’s Hardware
Tom’s Hardware
Technology
Denise Bertacchi

Reports of the previously-recalled Bambu Lab 3D printer being a fire hazard resurface, new power board component issue identified as the cause — Bambu says the A1's issue has been addressed, affected units replaced or repaired

Bambu Bambu Lab Tom Hardware
Concerns Raised Over Bambu Lab A1 Power Board Thermal Behavior.

Concerns are being raised within the 3D printing community regarding the Bambu Lab A1 after a recent video by YouTuber Grant Posner (3D Musketeers) revealed a possible safety issue. Posner has seen an alarming number of A1 printers with charred or melted cases, which suggests that the A1’s AC power distribution board may be operating above normal temperatures, posing a risk of fire. The AC power board uses an NTC thermistor to limit inrush current and is active only while the printer is rapidly warming up. Posner claims this thermistor is being pushed too close to its rated limits.

Posner hosts the popular Print Fix Friday series on YouTube, where he analyzes 3D printing fails and offers practical advice. He told Tom’s Hardware that he has operated his Tampa, Florida-based business for 15 years, offering 3D prototyping, scanning, manufacturing, and printer repair services.

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