Foaming FDM Filament

Basics

• FDM Filament that has had a Blowing Agent added to the filament
• Typically it is heat activated, so heat can control the foam amount
• A Relatively New Concept
• Some "Wood" Filaments use this method to allow for a similar finish, and properties to wood (Although some do use actual cellulose)
• Can allow for low density parts
• MAY allow for 3D Printed Insulation if a Higher Temperature Plastic, and PERHAPS a higher temperature blowing agent

Things to Look Into

• Also look into Gas/Supercritical Carbon Dioxide injection as an option
• Determine all it's Mechanical Properties as well as it's R Value etc
• Multimaterial 3D Printing with it/how it behaves in that application. (Could one make a foam lattice wing with a CF-PC Coating for Abrasion Resistance etc)
• Impact of Humidity on FDM 3D Printing (how does this filament compare to others)

Internal Links

• 3D Printed Insulation
• 3D Printed Wings / 3D Printed Propellers
• Composite FDM Filaments

External Links

• A Video on This Material
• One Such Filament "LW-PLA BLACK" ~50 USD
• One of the Wood Simulating Variants "Polymaker Polywood" ~30 USD