About this 3D model

Modified fan duct in Tinkercad to fit snug on the extruder and to mount a 50 mm fan. I have the fan plugged into the 20 volt power jack on the back of the printer, I wired in a voltage step-down voltage module (ebay $4 US) that is adjustable and am running it @ approximately 14 volts. I am finding that I get the best results when printing in "normal" mode and at .25 layer height settings.