Intake tract/funnel for print cooling fan

thingiverse

A crucial component in any print setup is a funnel or intake tract for the print fan. This specialized duct gradually decreases its cross-sectional area as it leads down to the intake of the fan, resulting in enhanced performance. The benefits are undeniable, and with careful design, this feature can make all the difference. In fact, it's surprising just how much of an impact it can have on overall print quality.