2.1 What you may print: the allow-list

Module 2 · Lesson 1 of 10 · about 3 min

The most important rule in this module:

The lists today

The wiki page is always the current version, and it is the one that counts.

• Model material is what your part is printed in. Support material is what the supports, or just their top layer (the support interface), are printed in.

• Matched support is a breakaway support filament that its maker says works with your model material, from any brand. PLA and PETG may also support each other (2.4 Support material, and the X2D's second nozzle).

• The upper row is stricter because it is meant to be the reliable starter printers. That is also why it runs SuperTack plates, which bring limits of their own: silk PLA only as Bambu PLA Silk+, and support only as Bambu Support for PLA, because other silk blends and other brands' supports can stick too hard and damage the plate. Filled filaments are never used there either (2.2 The materials).

• On an X2D, a listed material may go in either AMS, except that the AMS HT never takes a filament that Bambu's compatibility guide rates highly not recommended or unavailable for the right nozzle (2.4 Support material, and the X2D's second nozzle).

Check the label. The material is printed on the label on the side of the spool. Bambu's light grey spools hold materials like PLA and PETG, and their dark grey high-temperature spools hold materials like ABS and ASA, but only the label tells you exactly which.

Four Bambu spools with their labels: PLA Basic and PETG Basic on light grey spools, ABS and ASA on dark grey high-temperature spools

Never allowed, on any printer

• PVC and POM (acetal): harmful fumes when heated.

• Water-soluble filaments of every kind, such as PVA and BVOH: they clog hotends and take up moisture too fast for a shared room. That is why all support here is breakaway support.

• Flexible filaments of every kind, such as soft TPU, TPE and PEBA: they jam in an AMS.

• Glow-in-the-dark filament of any kind: extremely abrasive (2.2 The materials).

• Any filament you cannot identify.

Anything else that isn't listed can be requested. PC (polycarbonate), for example, isn't on any list yet, but you may ask for it to be tested. PVC never can be. Materials that need a plate or adhesive the room doesn't have, such as PP, PVDF and PCL, are only considered once there is a safe way to print them.

Getting something added

Ask the room developers in the Slack channel #3D-Skrivare. They test the material and add it to the Allowed materials page, and only then may you print it. The wiki page is the official record: a "sounds fine" in Slack is not.

Image sources: spools, Bambu Lab product photos.