Fused filament fabrication
FFF (fused filament fabrication, also called fused deposition modeling, fused deposition method, FDM) is an additive manufacturing technology.
A fused filament fabrication tool deposits a droplet of one material (plastic, wax, metal, etc.) on top or alongside the same material making a joint (by heat or adhesion).
The phrase "fused filament fabrication" and its abbreviation to "FFF" is typically licensed from AdrianBowyer under the RepRapGPLLicence.
The phrase "fused deposition modeling" and its abbreviation to "FDM" are trademarked by Stratasys Inc.