Ender 3 with Micro Swiss Direct Drive Extruder dual 4020 Fan Duct
thingiverse
I am currently working on a simple fan duct for the MicroSwiss direct drive mounting plate. For part cooling you can either install one or two 4020 blower fans. The whole body is screwed together, which makes printing quick and simple and you don't need to use support. By not using the original metal housing for the fans, the saved weight can go into a second blower fan. The total weight of my cooling assembly weighs the same as the original one, but it has two 4020 instead of one small fan. This is still work in process.
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