Mister Screamer: a 3D printer filament alarm for replacing filament mid-print
Jul 4, 2017 | By Benedict Maker Donald Papp has designed a 3D printer filament alarm that alerts users when their printer is out of filament. The device, dubbed "Mister Screamer," is designed to hang loosely over the filament; when the spool runs out, Mister Screamer will drop to the ground, causing it to emit a loud sound.
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