Yet another litho box/lamp, for my mother's birthday. The top printed fine without supports, but required cleanup underneath. If you use supports, be aware that you'll have to get them out of the 5 mm holes on the underside.
This is made to work with a standard candelabra cord set from any hardware store, and bulb. It was designed around 100x83mm lithos. The top turns surprisingly freely - I'm glad I decided against ball bearings!