Because this symbol is very cool. Don't print the first layer too fast, the nozzle will do some tight corners, and may rip everything.   Based on my iPhone4 classic case design available here : http://www.thingiverse.com/thing:394953 Feel free to modify the thing above : source files are available. Printed fine in PLA with 200µm precision. You don't need any support. Don't print the first layer too fast, the nozzle will do some tight corners, and may rip everything.