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
• Also look into gas injection as an option

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