5 model

Free

3d Printable Air Balloon Engine for LEGO

Sketchfab

Free

Hot Air Balloon

Sketchfab

Free

3d Printable Radial Pneumatic Engine

Sketchfab

Free

Oscillating Cylinder Motor for LEGO (3d Print)

Sketchfab

Free

Lilypop Character 3D Printable Anime Figure

Sketchfab