The Bambu Lab AMS is an intelligent system that communicates with the tool head to guarantee smooth feeding and automatic mid-print filament switching. Most failures with AMS are due to improper use. Here are some guidelines to reduce issues and have the best user experience:
1. The AMS supports spools with a width of 50-68 mm and a diameter of 197-202 mm. When operating the AMS, we recommend using Bambu Filament, which has been thoroughly tested to work with the AMS. If you purchase a single AMS unit, it will come with a filament buffer. If you plan to link multiple AMS units together, you will need to purchase the AMS Hub.
2. Avoid flexible materials with the AMS because they can get stuck. These include TPE, TPU, or damp PVA. Glow-in-the-dark, particle-infused, or filaments with carbon or glass fibers may be brittle, break inside the AMS, or be abrasive and prematurely wear the internal parts. BambuLabs PA-CF and PAHT-CF, however, have both been designed and tested to be AMS compatible.
3. Please avoid using cardboard spools with the AMS. The spools are often not uniformly round and may slip or leave dust residue.
4. Please note that the PTFE tubes are consumables and are at risk of wear, as they may rub against the filament over time. We recommend that you check the PTFE tubes for wear during your maintenance of the machine. If the tubes are worn and not replaced in time, this may lead to feeding failures, filament accumulation inside the AMS, etc. If needed, please refer to these tutorial videos on replacing PTFE tubes. （Replacing the PTFE Tubes | Bambu Lab Wiki）
If you run into any issues with specific filaments, please let us know so we can provide better advice to our community.