Retaining washer for fan duct, QIDI and Flashforge
thingiverse
I recently printed Neilberticus' two-piece dual extruder fan duct. It came out really well but I had concerns about the strength of the tab where it attaches to the carriage. So I created this little retaining washer. It's the same size and shape as the mounting tab on the extruder fan duct, and it holds the screw firmly in place, keeping it from falling out while also reinforcing the duct mount.
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