Ball joint guide
thingiverse
A straightforward ball joint guides filament into the extruder with minimal slack, approximately 0.5 of theoretical clearance, allowing for about a couple of tenths when considering my printer's specifications. This design can utilize DIN-912 M3x12 screws and T-nuts for improved fixation or function without them, as it possesses sufficient strength for its intended purpose. It is specifically designed for use with a 20x20 Bosch profile. Edit: Some configuration updates were added on 05/01/18, including a 90-degree joint guide rotation to accommodate various printer configurations. Additionally, the design has been modified to exclude holes.
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