popular models by otvinta3d —

otvinta3d

Fully 3D-Printed Rubik's Cube Solving Robot

otvinta3d

RC Tank that Prints without Support, Assembles without Hardware and Wires without Soldering

otvinta3d

Vintage 'Perpetual' Flip Calendar

otvinta3d

Stackable Planetary Gear Mechanism (Reducer)

otvinta3d

Hyperboloidal Gear Model

otvinta3d

Automotive Differential with Hypoid Gearing, Motorized Model