Material selection for 3D-printing with fused granule fabrication

This report discusses the selection of thermoplastic composite materials potentially suitable for manufacturing boat components and composite tooling by 3D printing (FGF) based on different testing methods. Thermal expansion/shrinkage of thermoplastic materials in 3D printing large-size products cause shape distortion. It is known fact, that thermoplastic materials require fibers or fillers to reduce material shrinkage from hot melt to room temperature. Therefore, wood-filled thermoplastic composites and glass fiber reinforced thermoplastic composites are selected for testing for various properties relevant to the service life of the printed products, boat components and moulds. The following sections of the report describe the chosen materials, testing methods and results in detail