Never start from nothing: open a body that already passes every check, then make it yours with kits and parts. Each card is drawn from its real shapes.

A solid builds the body. A hole cuts through it: for a window, a port, a slot.

Every shape has its own settings on the right (a star's points, a cone's radii, a ring's tube) and a pink dot on the shape in the view.

A kit is a group of shapes that makes one part of a bot: ears, feet, a visor, vents. Press Add, or drag one onto the body and see where it will land. It stays plain shapes afterwards, so change any of it.

Each part cuts its own pocket, adds its own mounts and opens its own windows in the body. Press Add, or drag a part onto the body in the 3D view.