Ender 3 Red Squirrel Fan Duct - Direct Drive Remix
prusaprinters
It is still functionally identical to the original fan duct, but I made it more direct drive friendly and integrated a BL Touch mount for the Ender 3 Pro. I also added a hole to access one of the mounting screws even when fully assembled for an easier mount/dismount. A quick test at 70% fan speed gave me pretty decent overhangs up to 75°. 80° is okay but getting messy and it failed at 85°, maybe it could handle that better at 100% fan. Print with the rear mounting surface facing down. Supports are necessary as there are a lot of flat overhangs.
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