Poor man's openscad screw library

cults3d

Update: Due to some bugs in the initial version, a revised OpenSCAD library has been uploaded, please use "polyScrewThread_r1.scad". Special thanks go out to mechadense for reporting these bugs! This is my humble take on a screw library designed for use in your OpenSCAD scripts. If you're serious about getting the best results, you'll do better to use syvwlch's excellent work at http://www.thingiverse.com/thing:8793. Anyway, I've had this project stuck in my lost projects folder for months due to some serious issues - and although some of them remain unresolved (it still doesn't render), once the dust has settled it compiles into nice, printable things. Unlike other libraries, this one uses loops instead of functions. Instead of rotating polyhedrons, it draws the polyhedron in a new set of points. Just a few comments to help you get started: A resolution of 1.5mm (PI/2 is what I use most often) works very well for threads that will be used with nuts made from a 0.5mm resolution. I've printed the threads at a low infill setting (0.2), but for the nuts, setting this value to 0.45 helped a lot with the overhang issue. More pics can be found @ http://aubenc.imgur.com/screws_threads_an_other_polyhedron_games