I created this thingy in order to perfect the bridging on my printer in order to actually build strands in thin air like here: http://www.spyder3dworld.com/downloads/wheel-spokes/ The openscad file is included where you can change the parameters, like the maximum lengthStart off with your favorite temperature and speed settings and use 0.2mm layer height and extrusion width the same as your nozzle size. Then you will need to take it from there to tweak your settings (advanced users!)