Printrbot simple 1405 fan shroud with air flow guide
thingiverse
I upgraded my Printrbot 1405's fan duct to improve airflow. The stock setup produced uneven air flow exiting the nozzle due to turbulence created at the exit point. I tweaked it by adding airflow guides to stabilize the air flow and straighten it out before reaching the nozzle. Note that this mod requires longer screws for the fan shroud; in my case, I swapped those with the ones used on the Y axis belt. Works fine with slic3r for now. Note: Requires extended screws for fan shroud, replaced with tighteners from Y-axis belt. Cheers, Mupp
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