Matthew Gregori has a bit of a mystery on his hands. He’s received a gift produced on a 3D printer, but doesn’t know what it is. Here’s the description:
I received a gift from a client that was produced on his 3D printer. It consists of a square base with 2 perpendicular slots with a rail fitted into each slot. The 2 rails are attached to a handle such that when the handle is turned, the 2 rails slide back and forth past each other. The knob at one end of the handle traces out the shape of an elipse.
Can anyone shed light on this?