Docs

Start with your scale and space. Draw a circuit, preview the drift line in Drive, and prepare full-size templates in Build.

Start here

  • Getting Started — Set your scale and space, create a blank circuit, and find your way around the Draw, Drive, and Build workspaces.
  • Scale & Units — The RC scales Circuit Builder supports, how lane widths change with scale (and how to allow narrower ones), and switching between feet and meters.
  • Area Setup — Define the table, garage, or hall your circuit must fit inside, and check the layout against its boundary.

Draw

  • Drawing Roads — Draw connected roads, select, move, and rotate groups of pieces, adjust road widths, and use alignment guides.
  • Circuit Elements — What’s in the element tools for Competition, Touge, and City circuits: markings, objects, zones, pit, rest stop, and parking.
  • Elevation & Structures — Raising the road, the piers and decks that appear automatically, and running a circuit under a tunnel.
  • Environment & Scenery — Regenerate automatic City scenery, edit Competition venue models, and understand connected pits and scenery visibility.

Drive

  • Drive & Simulation — Preview a lap, edit the drift path, tune transitions, and check clearance with up to six cars.
  • 3D Viewer — Explore your circuit in 3D, follow a car, and preview Day, Dusk, or Night lighting.

Build

  • Pieces & Build Progress — Choose a trial piece, read its dimensions, track assembly, and recheck changed pieces.
  • Build & Printing — Download full-size templates, calibrate your printer, assemble tiles, and print a circuit overview or build guide.
  • Materials & Budget — Plan package quantities, account for waste and owned stock, and estimate your shopping budget.

Save & Share

  • Saving & Circuits — Save and sync circuits, recover from save errors, and compare or restore private versions.
  • Community & Gallery — Publish a circuit to the public gallery, rate and remix other people’s circuits, or embed one on your own site.

Reference

  • Scale Calculator — Convert a real-world width to its model-scale equivalent, or a space on your table back to real-world feet, at any of the ten RC scales.
  • Keyboard Shortcuts — Every keyboard shortcut and gesture in Circuit Builder, tool by tool.
  • FAQ — Answers to common questions about Circuit Builder.
  • Drift Terminology — What apex, clip, manji, and touge actually mean, and how Circuit Builder’s Drive controls relate to them.
  • Other Ways to Lay Out a Track — How Circuit Builder compares to graph paper, general CAD tools, and other RC track-layout software — what each is actually good for.