Brighten up your window with a gothic design from http://www.craftsmanspace.com/free-patterns/gothic-tracery-window-pattern.html. Make it into a "stained glass" piece by sandwhiching a piece of coloured celophane between two of these.For a single extruder combine parts 1 & 2 together and they still will make a delightful piece. The print ready .x3g file: 0.1mm layer height 100% fill 2 shells Left and Right extruders 210? Took ~ 3hours