following a horrific crash in my quadcopter and the joys of my previous case (http://www.thingiverse.com/thing:542093) i give to the world....... this thing!!! featuring a pattern that is both triangular AND covers/fits the whole back of the case unlike the last one. magnificent, just look at it! (also, as i have recently discovered, this only seems to fit a knock-off Spigen case [got mine off ebay] and not the genuine article my dad has, it's about 4mm too long)the .STL file ending just 'triangle ' has thinner triangles and the pattern is up the other way to that shown in the picture (i found the finished print was a bit rough). the .STL file ending 'triangle 2' is what is shown in the pics. it has slightly fatter triangles which made for a smoother finish.