This is a longer button for the slightly different version of the OnStep Smart Hand Controller discussed on this page: https://onstep.groups.io/g/main/message/16105, for more details on this specific controller. This button will not work in the normal OnStep SHC.

I have included the .step file for the design but the the Fusion 360 cad model for it is also available here: https://a360.co/3xnu91n

This design is designed to be resin printed. While I'll stop short of saying it won't print on an FDM printer, some of the features that allow it to grasp the switch post are quite small (1 mm or so) and would be tough for most FDM printers unless you know what your doing.