Choosing a chassis starts a new unsaved build. Saved builds remain in My builds.
Stored in this browser. Classic blueprints are kept intact; importing one creates a separate hero copy.
Choose a part, then drag its translucent preview toward a mount. Click a mount to snap; press Enter to attach. Green means aligned; red explains what needs fixing.
Creative objects drag over the timber deck. Arrow keys move X/Z; Page Up/Down adjusts height. R rotates; Shift+R rotates backwards. Tab cycles mechanical mounts during previews, or installed parts when the canvas is focused. Floating or colliding placement cannot be attached.
Click an installed part to inspect it. Use Replace, Move / rotate, or Delete. Alt-drag or right-drag orbits; wheel zooms; F frames the build. Ctrl/Cmd+Z undoes; Ctrl/Cmd+Shift+Z or Ctrl+Y redoes. Escape cancels a preview.
Placement supports translation and yaw. Test Drive uses this exact build; pitch, roll and scaling remain future work.