Boron carbide (B4C) is an inorganic nonmetallic material with excellent performance, which is synthesized at high temperatures by the combination of boron and carbon.The hardness of B4C materials are second only to diamond and cubic boron nitride, and thry have excellent chemical and physical properties. With the explosive development of 3D printing technology, a wider range of materials can be printed now. Recently, B4C materials have also begun to be applied in the field of 3D printing. As shown in Fig. 1, a qualified 3D printing (FDM) test piece with B4C-PEEK composites.