Anet A8 Filtered Filament Guide
thingiverse
I designed a custom filament guide with a built-in dust filter, combining two excellent designs to enable printing without any support material required. Before installing it, I printed a few threads of the cap, rotating it half a turn in and out each time to smooth it out. The design includes a convenient access hole for screwing in the end cap during installation. This hole will be sealed once the cap is securely fastened. For filter installation, follow Kezat's advice: pinch the filament between two halves of a cut sponge, then push all three into the small opening and screw on the end cap. So far, it has been working flawlessly for me.
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