It lights sideways onto the printbed so the nozzle is well light up. It´s far enough from the printbed so the Pi Camera Bed Mount http://www.thingiverse.com/thing:442063 doesn´t collide with the Dioder LED Strip. Maybe I´ll make a bigger one too with a second Dioder shining from the top onto the print, but then it will be hard to reach the printbed. We will see. ;) Have fun with it!Sliced in Cura, Layer height 0.2, 0.3 should also work fine. Shell thickness 0.8mm Bottom / Top 0.6mm Infill 0% Speed 60mm/s Temp 200°C Filament iGo3D black May not be optimal but worked. ;) Simply clip it on the front panel of your PrintrBot Simple Metal and insert the Dioder from IKEA. The Dioder IS NOT connected to the Printrbot, it runs with it´s own power supply!