21 tooth 8mm shaft
thingiverse
Customized version of Thingiverse.com:16627 Created with Customizer! thingiverse.com/apps/customizer/run?thing_id=16627 Instructions Using the following options: Pulley height at base (pulley_b_ht): 10 teeth: 21 Idler height (idler_ht): 1.5 Motor shaft diameter (motor_shaft): 8.1 Additional tooth width (additional_tooth_width): 0.2 Nut angle (nut_angle): 120 Profile depth (profile): 3 M3 nut hexagon diameter (m3_nut_hex): 3 Pulley thickness at hub (pulley_t_ht): 13 M3 nut major diameter (m3_dia): 3.4 Additional tooth depth (additional_tooth_depth): 1 Number of M3 nut flats (m3_nut_flats): 5.9 Number of nuts to use (no_of_nuts): 3 Distance from shaft axis to nut (nut_shaft_distance): 2.2 Pulley diameter at base (pulley_b_dia): 25 Idler: 1 Retainer height (retainer_ht): 1.5
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