Typically it is different colors of the same material, but you can put different materials in each slot too. Common 3D printing filaments are PLA, PETG, ABS, TPU, and less so ABA.
Typically it is different colors of the same material, but you can put different materials in each slot too. Common 3D printing filaments are PLA, PETG, ABS, TPU, and less so ABA.