The file 'Spiral Object – For Testing & Fun (For 200mm X 200mm Platform) 3D Printer Model' is (c4d,stl) file type, size is 172.3KB.
I made this to test a few things on my Prusa Mendel, including speed, feed rate, belts and platform level. Although I made for testing purposes it's pretty fun to watch because it has a long continuous print when it does the edges.
I included the Cinema 4D file just in case someone wants to tweak it.
Spiral_Level_Test.c4d | 112.8KB | |
Spiral_Level_Test.stl | 395.2KB |