About this 3D model

Version 1.1 - Added 2510 and 2515 Fan models as per eagebhart feedback (but with screw size 3mm - holes are designed for screw to go thru not to embed the screw). Again lightly tested. When I was making my [Carbon Air Filter](http://www.thingiverse.com/thing:112734), I needed dimensions for a Fan to cutout the air hole and screw holes. So I went overboard and collected a whole bunch of sizes, then hey-presto FanLib, an OpenSCAD library to help draw Computer/Muffin fan shapes/sizes. Arrgh - Thingiverse Rendering...click view full size! Limited testing to-date. Notes ---- The sizes were collected from various datasheets, if they don't match your fan you can create your own definition, see FanLib-Test.scad for an example. If someone thinks there is a really common size missing give me the sizes and I'll add it. The data storage strategy is as used in MCAD/stepper.scad "A nema standard stepper motor module Originally by Hans Häggström, 2010.", thanks Hans. Uses the MCAD libraries shapes.scad (for the handy roundedBox module) & materials.scad (just for the test module to look pretty), thans to Catarina Mota/Elmo Elmo Mäntynen & again Hans Häggström.