If you want to make a composite material and print it without being subjected to high temperature, you may want to investigate Direct Ink Writing (DIW) 3D printing. This 3D printing method uses a syringe for depositing a paste in a layer-bylayer fashion, similar to FDM. Stereolithography (SLA) 3D printers, sometimes called "resin" printers, are also seen as non-high temperature printers. However, this is misleading as the methacrylate photopolymerization reaction is exothermic and can locally easily reach more than 100°C.