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Bambu Lab issues recall of A1 printers over heatbed cable

The company is proposing existing customers several options to resolve the issue

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Bambu Lab has issued a recall of the recently released A1 printers over unstable temperature readings and heating issues. The company conducted a comprehensive investigation and decided to recall the A1 over the conclusion that these issues are linked to the damage at the root of the cable which is the connecting point of the heat bed cable and the base of the printer.

While this is a setback for the first consumer product from the rapidly rising Chinese leader in high-speed desktop 3D printing, it also shows the company is mature and strong enough to issue a recall to ensure the safety of its products. In addition, the company’s very “Apple-like” decision to focus on a very limited number of printer models, enables (and obligates) Bambu Lab to ensure a much more dedicated focus on each product line.

According to Bambu Lab, to a very small portion of A1 printers, excessive bending caused by external force leads to damage to the cable at the root. This damage might not immediately cause the cable to fail, but it will make the cable more susceptible to fatigue and damage in later use. Although the fuse on the heat bed will prevent the bed from overheating, and the fuse on the power supply will prevent any short circuits from developing into any meltdown, this damage will affect the reading of the temperature and may cause power loss or even short circuits.

Bambu Lab issues recall of A1 printers over heatbed cable, proposing existing customers several options to resolve the issue
Healthy cable.

During the reliability test of A1 in the development, the company said its engineers had tested the fatigue of the cable caused by the movement of the bed during printing. However, the test did not include the corner cases such as fatigue after excessive bending caused by external force.

According to Bambu Lab, several factors may cause this damage including rough handling during transportation (for example dropping the package in certain directions so that the root of the cable is impacted) or during installation, if the base is vertically placed on the table with the cable side at the bottom, all the weight of the printer will be concentrated on the root of the cables and causes damage.
Other possibilities for damage occurring after the installation may include the cable’s root on the printer base being impacted by external force by accident.

Bambu Lab issues recall of A1 printers over heatbed cable, proposing existing customers several options to resolve the issue
Damaged cable.

If the heat bed cable exhibits signs of damage confirmed by Bambu Lab, the company will arrange the diagnosis and replacement. If the cable is intact, which is the case for most of our customers, to proactively safeguard your cable against future damage, Bambu Lab engineered a Cable Protector that acts as an extra strain relief. This device takes 30 seconds to install without the need for any tool and restricts the cable’s bending angle, thereby offering preventive protection. Within the next month, Bambu Lab said it will dispatch cable protectors to all customers who have made past purchases.

Beside the product recall, Babu Lab also said it will enhance the packaging for all the A1 units currently in stock in its warehouses to prevent cable damage during transportation. The package update involves open-box operations, resulting in visible signs such as holes cut in plastic bags, additional padding, and modifications to the box. All the extra reinforcement will be done using official packaging materials and will not affect the printer itself.

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Davide Sher

Since 2002, Davide has built up extensive experience as a technology journalist, market analyst and consultant for the additive manufacturing industry. Born in Milan, Italy, he spent 12 years in the United States, where he completed his studies at SUNY USB. As a journalist covering the tech and videogame industry for over 10 years, he began covering the AM industry in 2013, first as an international journalist and subsequently as a market analyst, focusing on the additive manufacturing industry and relative vertical markets. In 2016 he co-founded London-based VoxelMatters. Today the company publishes the leading news and insights websites VoxelMatters.com and Replicatore.it, as well as VoxelMatters Directory, the largest global directory of companies in the additive manufacturing industry.

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