Hardware

Required

A spring that is about 15mm long and 5mm in diameter. The design can use larger and smaller springs.

Spring harvested from a standard click pen are a little longer than needed, but should work. If the click mechanism feels too stiff, shorten the spring with wire cutters.

Optional

A long M3 bolt to transfer the click action out of the device for some secondary purpose - or just to demonstrate the change in distance caused by the click.

Printing

Supports are only needed for the button.

The cam includes a thin 1 layer bridge over the bolt hole. If you intend to use a bolt, puncture that bridge with the bolt.