My Bambu Lab AMS 2 Pro Broke — Here’s the Tiny Part That Fixed It

A few days into running my Bambu Lab X2D and the AMS 2 Pro suddenly stopped pulling filament. Disappointing — the printer itself had been excellent up to that point.

I contacted Bambu Lab support, sent videos and notes about what was happening. Their response: “we’ll send a replacement hub.” I pictured a brand-new unit on the way.

When the package arrived, it was a single tiny spare part. Not a hub, not a unit — just a small component.

Owning a 3D printer means being able to repair it yourself. I disassembled the AMS 2 Pro down to the section where this part sits, swapped it, and the unit is running again. Hopefully this repair lasts.

Watch the 90-second story:

Anyone else dealt with AMS 2 Pro filament-feeding issues? Drop your experience in the comments — curious how widespread this is.

— Daniel, The Smart Home Maker