Printrbot Simple - Dead Simple Filament Guide
thingiverse
A straightforward filament guide prevents the Printerbot Simple's filament from slipping out at the hobbed bolt. This gravity-held accessory requires no drilling. To use, simply print it, thread your filament through, and insert into the extruder of your 2013-model Simple for an end to filament creep worries. Models may vary slightly.
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