Multimaterial printing using both AMS and the spool holder

Bambu Lab X1 Series
4

Here’s how I do it:

  1. Prepare your print as you normally would using as many “AMS” slots as necessary for your multi filament/color print. I use the height modifiers to switch between filaments with different temps or pressure advance which is likely the case with PLA to TPU.
  2. Slice as normal.
  3. In the preview window go to the layer you want to change filament on and right click the “+” icon and choose “Add Pause” (NOT Change filament). You can only change between layers with this method.
  4. You then have to re-slice and do a pause for each filament change you intend.
  5. At the printer use the load/unload to manually load up the first filament using the external spool.
  6. When you “Send” to printer at the end just make sure to disable/uncheck the Enable AMS.
  7. At each pause in the print use the unload/load functions to manually load each filament. It should change temperature, K factor, etc that you set up with height modifiers earlier.

I think I had to set the TPU max flow to like 2mm/s or something super slow to get it to print nice. I also found that TPU bonds better to PETG than PLA if that’s an option for you.

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