This thing was made with Tinkercad. It is a keychain with Icons from Android OS. I got inspiration from the iOS App Icon Keychains made by pixil3d. The thickness is 1,6 mm for the base and 3,2mm total. Slice with Z 0.18 mm and you get 8 layers as base, then from nineth layer the icon starts. Do a filament change when the icon starts to print and you get nice multicolored stuff... Here you get a lot of different ones, not related to apps, but to system. STL are for individual icons. Three "plates" contain the whole set, ready to be printed as G-Code, 12 at a time. Load G-Code files on a RepRap compatible with 20 x 20 cm printing plate and save slicing time. Gallery Icon has two versions, if you print with two colors, you find out why (choose a transparent PLA color like blue or red.). Some Icons are multi level for added coolness.