FTC 18x18 Chassis Master Sketch

Using my reference image, create a simple, editable 3D CAD master sketch for an FTC robot that can be imported into Onshape. Include an 18 × 18-inch rectangular chassis outline, four wheel placeholders with axle centers, a battery zone, a control hub zone, and three transparent perpendicular reference planes labeled Front, Top, and Right, intersecting at the origin. Add X, Y, and Z axes, centerlines, construction geometry, and basic dimensions. Keep the design extremely simple, with thin CAD lines, transparent reference geometry, and clearly labeled components. Match the layout of the reference image, including an isometric view and simple top, front, and right views. Use placeholder dimensions that can be edited later. IMPORTANT: I need an actual editable CAD model, NOT an image or rendering. Generate real geometry with a clear feature structure and export a STEP (.step) file for 3D geometry, a DXF (.dxf) file for the 2D master sketch, and a native editable CAD file if supported. If you cannot generate the files directly, provide a working Python script or CAD macro that creates the model automatically. Make sure the files are valid and compatible with Onshape. Do not add motors, detailed mechanisms, decorative features, or unnecessary complexity.

Parameters

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.