Spool hub - 75 mm to 8 mm
thingiverse
This is a straightforward three-spoke spool hub designed to connect a 75mm diameter reel to an 8mm spool rod. The design enables a bit of flexibility or bowing to fit snugly on both sides of the spool. Spools are not identical in diameter, so one side will be tighter or looser than the other. The STL file includes one spool hub scaled and oriented for printing with Cura. You need to print two units. Using calibrated filament is highly recommended. I use these calibration pieces to calibrate mine: http://www.thingiverse.com/thing:1037301 Print Settings: Printer: Rigidbot 2 RAFTS: No SUPPORTS: No RESOLUTION: 0.1 - 0.2 mm INFILL: 24%
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