28mm

thingiverse

Customized version of http://www.thingiverse.com/thing:16627 Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=16627 Instructions: Using the following options: m3_nut_flats = 5.7 mm retainer_ht = 1.5 mm additional_tooth_depth = 0 mm additional_tooth_width = 0.2 mm m3_nut_hex = 1 count m3_dia = 3.2 mm idler_ht = 1.5 mm idler = false flag pulley_b_dia = 27 mm motor_shaft = 5.2 mm pulley_t_ht = 12 mm retainer = false flag nut_angle = 90 degrees no_of_nuts = 1 piece m3_nut_depth = 2.7 mm nut_shaft_distance = 1.2 mm profile = 6 level teeth = 15 counts pulley_b_ht = 8 mm