Love and hate: kinetic sculpture

Present your friends or loved ones with a pleasant or unpleasant surprise- depending on the pose in which you start!

This design originates from something I sometimes do with my friends- showing middle fingers, then forming a heart with them instead. It's funnier in person, I promise. And now you can try it as well!

All parts can be printed without support materials. The hand should be printed on the angled bottom surface next to the one with the hole. The middle finger is definitely the most difficult part to print- it requires most of all good bed adhesion, but also decent tolerances. Try decreasing your layer height if it doesn't move. 

Just as a disclaimer, I worked through a lot of iterations, but the mechanism is far from perfect. Perhaps I will upload a V2 sometime, but until then you are welcome to try it yourself!

You need to print: 

2x Hand, Middle_finger (once normal, once mirrored)

2x Connector_Hand_to_Gear

4x Large_Gear

2x Small_Gear

6x Gear_Bottom

1xBase

Instructions:

Push the gears into the base as seen on the images: Large, small, large, large, small, large. Make sure the holes in the gears line up to each other. 

Press the Gear_Bottoms into the hole at the bottom of the gears to fix them in place.You might need to play with horizontal expansion to make them fit right.

Press the Connector_Hand_to_Gears, the small rectangle thingies, into the bottom of the Hands.

Lead the tendons of the middle fingers through the hole for the middle finger. Push the middle fingers onto the spike. Then lead the tendons through the hole by the thumb. Push the end of the tendons through the slots in the baseplate- might require some strenght. 

Now slot the hand onto the gear.