Mechanical Heart Box

Continuously turn the dial in the back, and the doors open and close exposing the mysterious inner workings. Watch it here: https://youtu.be/pKsV1MZJViw

Instructions are in the list of files.

My little sister needed open heart surgery to replace her mitral valve. Feeling otherwise helpless, I rather flippantly asked her if she needed anything 3D printed in plastic. She asked for a new heart valve, but I told her that if I made her a heart valve that she probably would not last very long. So she said how about a pendant, with a valve that opens and closes.

Inspired by 507 Mechanical Movements, http://507movements.com , I wanted to make something mechanical. So this is what I came up with.

She is a spiritual person, I love the Tao Te Ching, The mitral valve is a bivalve, I started all this around Valentine's day, So it all makes sense to me.

Find your own meaning, as you turn the dial in the back continuously clockwise, or counter clockwise, and the yin and yang do