Common 3D File formats. Image source: Cgifurniture.com The Diversity of 3D model formats Two fields of digital models There are tens of formats of 3D models in the market, including obj, stl, wrl, stp, iges, max, c4d, etc. Generally speaking, these various formats can be divided into two fields, Digital Content Creation (DCC) and Computer Aided Design/Manufacturing (CAD/CAM). The characteristics of the two fields DCC software mostly creates models in

Case Study in Ultimaker Cura Z seam problem Normally, when you print a cylinder or similar structure in a FDM 3D printer, the nozzle cannot go continuously along a circle. The nozzle will firstly go clockwisely or couterclockwisely from one point, then go back when it reaches the point again. Finally there will be left a seam composed by the start points, where the mechanical properties may be quite different, as shown in the following image.

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