A birdhouse for crystal birds. Easy to mount on the side of your 3D printer - in the hope of attracting a humming bird (all I got was a pathetic penguin).Print and fasten to a tree - wait for our feathered friends to find it... This one was printed in clear PLA on a Replicator without support - extruder 205 deg C, layer height 0.3mm, 2 shell, 10% infill, 100mm/s speed while extruding (150mm/s travel), unheated platform. There are two versions of the STL - one has a small "door" to help with un-supported printing, the door can be cut out with a knife. The OpenSCAD file to create the birdhouse is included.