Printrbot Simple Metal Improved High Flow Fan Blower Upgrade

75mm x 30mm Blower Fan Upgrade.

I designed this to help cooling when working with Timberfill and Bronzefill filaments, but works really well with PLA and helps with bridging, overhangs or small details which are prone to overhearing.

Check out the results on my #3DBenchy
Using Fillamentum PLA Extrafill Rapunzel Silver

Notes:

The Fan duct does not need the classic "notch" because it attached further out allowing more airflow.

You can use the duct by itself without th