Restore Your AMS Auto Feeding with Original Bambu Lab AMS Feeding Funnel Is your Bambu Lab AMS repeatedly reporting "Failed to feed filament" errors or retrying endlessly during multi-color prints? The culprit is often a worn AMS Feeding Funnel – the critical component that guides filament into the AMS First Stage Feeder and houses the filament detection sensor board. What is the AMS Feeding Funnel? The AMS Feeding Funnel is the inner component of the AMS First Stage Feeder. It consists of mechanical structural parts (featuring a funnel-shaped feed inlet) and a filament detection sensor circuit board. How It Works When the sensor board detects filament insertion, the AMS First Stage Feeder automatically pulls the filament forward. If filament insertion is abnormal—such as tip curling or misalignment—the sensor board identifies the issue and sends feedback to your printer. When to Replace the Feed Funnel Assembly The funnel-shaped feed inlet is severely worn, affecting loading and unloading. HMS reports assist motor overload or feeding/retracting errors. After-sales team confirms a circuit board failure on the feeder. Frequent "Failed to feed filament" errors even after cleaning PTFE tubes. What's in the Box 1x Original Bambu Lab AMS Feeding Funnel (with integrated filament detection sensor board) Compatibility Compatible with Bambu Lab AMS (multi-material system for X1 Series, P1 Series, and other AMS-compatible printers). Important Note Bambu Lab has upgraded the circuit board of the AMS First Stage Feeder to optimize product performance. This upgrade affects AMS units with the earliest mainboard version. Please confirm your AMS mainboard version on the Bambu Lab Wiki before purchasing. Installation Replacement requires H1.5 and H2.0 hex keys, tweezers, and pliers. Power off the printer and disconnect the AMS before starting. Follow the detailed step-by-step guide on the Bambu Lab Wiki under "Replace the feed funnel assembly