HE3D K280 PASSIVE FAN DUCT

thingiverse

To resume I wanted to give a filament fan duct to my HE3D K280 but I did not have a 24V fan (one of 12V experimented here was burn out). So I have meditate and draw that passive fan duct. I use the air flow coming from the head fan radiator on both side and redirect it beside thru a mouth. It looks like a case on the radiator that can be adjust fine with some refinement cuts inside. Very lightweight it will hold on the radiator No screw ! Flow is well adjusted below the nozzle. Obviously it is not a active fan driving by the G-code and it cool down filament constantly. It permits to keep the nozzle visible and preserve the original - and funny - small size of the head block for a so big printer ! Better in PETG than in PLA for its proximity with the heat block for K280 and K200 owners, let's try it.