Use of humor casting in SolidWorks Happening. It can sometimes materialize that, before validating a 3D performance, it would be easier in 2D schematic. That's why the SolidWorks Motion agency is fit to use humor blocks only. Flatbottomed before the 3D interpret, uprise see how to clear your move in 2D with these draw blocks by adding fillers, refer points, engines etc. You can then recall these sketches to whole your modelling.