AMS lite Setup & Filament Loading

The AMS lite is an open, four-spool feeder that lets the A1 print in up to four colors or materials in one job.

Setup

1. Mount the AMS lite on its stand next to the printer, or on top of the frame with the official bracket.
2. Connect the PTFE tube from the AMS lite hub to the toolhead and plug in the cable. Keep the tube free of sharp bends.
3. Hang the spools so they unroll toward the feeder, then push each filament end into its slot until the motor grabs it.

Avoiding jams

• Cut each filament end at a sharp angle before loading — a blunt or bent end is the most common loading failure.
• Use spools with a smooth, round edge. Cardboard spools can shed fibers and slip; a printed adapter ring helps.
• Keep the AMS lite away from very damp rooms. It is not enclosed, so moisture-sensitive materials such as PETG or TPU should be dried first — see the Filament & Material Guide.

Note: TPU cannot be fed through the AMS lite. Load it from the external spool holder instead.

Saving filament on color changes

In Bambu Studio, use Flush into objects' infill or a prime tower with reduced flushing volumes. Light-to-dark changes need far less purge than dark-to-light.