Where you need paper for a normal printer, a 3D printer uses filaments as printing material. The 3D printer fuses the filaments together layer by layer. The filament solidifies quickly, giving the object shape and retention quickly. The most common filament types are PLA and ABS. You can buy filaments in various colors, materials, and weights. Dyes ensure that almost every color is available as a filament. Check which printing material your 3D printer uses before your purchase anything.