Things that move in 3D

Gears turning in 3D

A two-stage gear reduction, 12 to 1

A three-stage gear train on a plate, with a crank

A gear train standing upright, as a clock's does

A small engine that turns over

A Geneva wheel: it steps, then stands still

Every tool, one at a time

Every tool in Draft 3D, one at a time.

Printing: from the model to the printer's bed

Printing: how a part is sliced, looked into layer by layer, and saved as a print program.

Projects, start to finish

Four projects from start to finish: a bracket, a box and its lid, a knob and its plate, and a phone stand.

Snapping, planes and drawing

Snapping, planes and drawing: how parts line up by themselves, and how to draw on any face or plane.