Adapter for mounting an Ikea Tertial lamp on top of a RigidBot (the adapter fits inside the hole in one of the top corner knuckles.

http://www.ikea.com/us/en/catalog/products/20370383/

Designed to be printed in nylon.

Warning: the weight of the lamp can shift the Rigidbot's frame so I don't recommend you use this design. It could still be useful if you don't move the light around.