Why does the file format of 3d printing model have to be STL and STP?
3D printing requires 3D stereogram. There are many formats of 3D stereogram, and the formats made by different software are different. For example, common 3D printing formats are: STL, STP, IGS, OBJ, BREP, MAX, 3DM, 3DS, X_T, SKP, SLDPRT, PRT, ASM, F3D, FBX, RVT, WIRE and so on. Different formats, other software may not open. In the same way, the 3D printer supports only a limited number of 3D stereogram formats. Nowadays, the most commonly used 3D stereogram formats for 3D p