Improved version of http://www.thingiverse.com/thing:346854 Mount with std screws, printed with 0.4 nozzle at 0.2 layer height without support, turned out very well, just the top 4 layers were slightly messy but a knife will get rid of that. Update; longer version added to get more air towards my extruder stepper for cooling. Supports included (not very easey to remove but with a pair of pliers no problem)