Lost the eyecup off of my camera, so I designed and printed a new one! Fits Olympus mirrorless camera models OM-D E-M10 MkII and the E-M5 MkII.
Because of the nature of the "slot" that is used to fix this to the camera, supports will most likely be needed. Additionally some post processing to clear out those slots is required. After all is said an done, though, it fit my camera quite nicely.
The author hasn't provided the model origin yet.