Adjustable wall frame hook

Small hook to hang a frame on the wall without having to drill any holes. There are 2 parts:
* The hook itself which is stuck to the wall with a [standard damage free adhesive strip](http://www.command.com/3M/en_US/command/hooks-strips/)
* The frame hanger, that need to be attached with 2 small nails. It is grooved so you can adjust the frame in a balanced position

Tested and approved
Open Scad sources are also provided if you want to play with them.