Tri-ventilation + led CTC I3 Pro B (Prusa clone)

thingiverse

I had printed a ventilation duct that I had found here on Thingiverse but I was not completely satisfied with it, taking the idea of having a light point near the nozzle, I designed a new one that divides the air flow in 3 directions in addition to illuminating the work area. The primary air flow ends in a plenum and from there branches into 4 direct holes under the nozzle. The second flow is directed both against the radiator and between the driver and the aluminum assembly block. The third stream opens into a narrow and wide mouth under the nozzle. To add the light point, I inserted 3 white LEDs (standard 5 mm LEDs) inside the plenum and directed towards the tip of the nozzle. The attached photos explain how to insert the LEDs. I took the power of the LEDs directly from the 12V power supply of the printer. Remember that for the LEDs the polarity must be respected and that a resistance of about 200 ohms must be inserted (choose a commercial resistance between 150 and 200 ohms). ATTENTION: Inside "Plenum Coper" I have inserted 2 M3 nuts, so it is necessary to insert the instructions to stop the printing inside the G code when you get 1 layer before closing above the holes provided, insert the nuts and resume the printing.