Press/release button with solenoid

thingiverse

I was working on my Chess Clock project and I wanted to create a switch that's held down by a magnet, part of the micro solenoid. To achieve this, I designed a set of parts around a cheap micro-solenoid. The first piece sits on top of the solenoid, split before printing and glued together afterwards. It keeps the lower end of the spring in place. The second piece holds the T-bar and the other end of the spring. The third piece connects the second piece to the button, also acting as a bumper. The fourth piece is the button itself, located outside the case. The fifth piece is glued to the case from the outer side, preventing dirt from getting in and disabling the button from being turned. I had 4mm face thickness in my box. The sixth piece is an extra part required for my clock project - a rotary encoder knob with the same design as the button before it. You'll also need a spring; unfortunately, one from a ballpoint pen is too hard, so I made mine out of a guitar string. A piece of nail connects the external knob to the internal parts. Check out more details at: https://sharedinventions.com/?p=254 and the featured video here: https://youtu.be/8eZaJewicOY