In the dialog box set the Output to Surface. The CAD files and renderings posted to this website are created uploaded and managed by third-party community members. Surface Morph Designalyze Com Parametric Design Parametric Architecture Grasshopper Rhino An offset surface enables users to create. . In the next section we create an offset surface to use as a trimming tool. Offset surfaces into a closed 3D model. A 3D surface offset method for STLformat models. In this Rhino 3D modeling tutorial I would like to discuss the scenario why sometimes Offset Surface is not working properly and how to fix this issue. On the 3D Model tab Surface panel start the ThickenOffset command. This paper presents a new 3D offset method for modifying CAD model data in the STL format. Generally offsets of 3D models are achieved by first offsetting all surfaces of the model and then trimming or extending these offset surfaces to.