Laser cutting is a process mainly used to work on surfaces. As such, it won’t understand a 3D file. You may only work with lines and vectorial drawings, any volume will be translated into such, and the result may be different from what you expected.


As we can see here, the pyramid was transformed into a cross within a square, as the model was not suited for laser cutting.
It is thus necessary to work on only one plane or separate ones, to avoid any difference between your design and the object which will be created. Depending on the plugin (we will talk about this later), your 3D model will be translated into one or multiple elements.