4 model

Free

EM-483 or 4mm motor pulley with 18T

Thingiverse

Free

Stanley SortMaster Junior (1-97-483)

Thingiverse

Free

Step Motor 28BYJ-48 Gearbox 3:1

Thingiverse

Free

Das Boot 1:48 parts 3 and 4 split

Thingiverse