Modeling the double cap

After having defined the optimal dimensions, we can model the double cap with Blender. Blender is a free and open source software, which allows modeling, animation and 3D render.

Modeling is also a crucial step to prepare a file we can then 3D print and allows us to verify if our device is realizable.

To model the cap part, we started by designing the screw profile and we extruded it along a spiral. Then we realized the rest of the cap around the screw pitch. We got one cap we can duplicate by mirror (to have opposite screw pitches). The last thing to add was the connector between the two caps, respecting the dimensions previously defined.