I printed one of Gecko's desk signs warning people that my 3D printer is useful for a lot of things so please don't talk to me about that damned gun thing. But I wanted a flat one I could print and affix to the front of the rolling cart my 3D printer is on, since that's where it's the most appropriate. I wasn't able to get the original file, so I imported Gecko's STL into Google SketchUp, then spent ages healing surfaces and stripping out a lot of the unnecessary curves. No matter how long I chased the flaws, Google SketchUp always remembered enough of them that the resulting model was non-manifold and beyond Netfabb's powers to fix. In the end, I had to rebuild it from scratch, which took a fraction of the time I wasted. Lesson learned! As with Gecko's original, this isn't intended as a statement about guns, but just about how annoying it is that the first and only thing everyone talks about when you bring up 3D printing is guns.Unlike Gecko's, mine prints better with the lettering up. No special printing requirements or instructions otherwise.