Basics for 3d construction with the program Blender, with design-tips for 3d-printing. In this workshop I will explain the (in my opinion) basics to construct 3d models for technical parts (by which I mean simple geometries, and no fancy sculptures which blender is actually meant for). In the beginnint I will lay out some design tips of these parts for fused plastic filament 3d-printing. I will try to make this accessible for absolute Blender-beginners and people who do not yet have much experience with 3d-printing but want to create their own models.