Combination Filament Guide and Sensor for Ender 3 Pro
thingiverse
I tweaked the base version of this, by mtsgsd, to fit comfortably on my Ender 3 Pro printer after it didn't sit right initially. I added a longer attachment point with some quick hacking. It still doesn't slide in fully, but now it sits securely and I'm not concerned about it falling off or wearing out prematurely. Be sure to check https://www.thingiverse.com/thing:3342820 for additional parts needed to assemble a complete filament guide system.
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