Anet A8 Fan Duct

thingiverse

I really liked the targeted airflow of the Spriya design by lokster (https://www.thingiverse.com/thing:2133328) but when I printed at higher temperatures, the heater core couldn't keep up. Even after a PID tune, the fan would trigger a thermal runaway because my nozzle was lower and the fan was cooling the heater block. So I designed one with an 8mm drop, which was too low. I redesigned it with a 4 mm drop, which worked for a bit but the PLA eventually drooped and hit a model. I settled on Spriya v3, which had a 3mm drop and narrowed the opening a little to avoid cooling the heater core. All three versions included for flexibility. Be sure to perform a PID tune after installing.