8684
These materials have been manufactured through Fused Filament Fabrication ( FFF ) , also known under its trademarked name Fused Deposition Modeling ( FDM ) .
 materials, manufactured, Fused Filament Fabrication, FFF, Fused Deposition Modeling, FDM
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 materials, manufactured, Fused Filament Fabrication, FFF, Fused Deposition Modeling, FDM