E20_Busbar_RevB

Create a parametric CadQuery model in Precision mode. Return a single raw JSON object with the top-level keys `title`, `param_schema`, and `script`. Set `title` to `E20_Busbar_RevB`. Use TextoCAD's native parameter schema and include a complete `build(params)` function that returns one solid. Do not wrap the JSON in quotes or Markdown fences. Model a symmetric copper busbar with two level horizontal end tabs and a raised central platform. Use millimeters throughout. Define these editable parameters: - `length` = 120, finished length along X - `width` = 12, width along Y - `thickness` = 3.5, uniform material thickness - `flat_contact_length` = 8, measured along the bottom contact face of each end tab from the end face to the tangent point where the first bend begins - `platform_underside_height` = 5, measured from the bottom faces of the end tabs - `inside_bend_radius` = 0.5, used for all four 90-degree bends Build the closed X–Z side profile using straight segments and tangent quarter-circle arcs. Set the outside bend radius to `inside_bend_radius + thickness`. Derive the left inward-facing vertical wall position as `flat_contact_length + outside_radius`. Mirror the profile about the midpoint of the finished length. At the default dimensions, the bottom contact face of the left tab runs from X = 0 to X = 8, and the bottom contact face of the right tab runs from X = 112 to X = 120. Both faces are at Z = 0. The inward-facing vertical walls are at X = 12 and X = 108. The central platform underside is at Z = 5 and its top is at Z = 8.5. Extrude the closed profile along Y by `width` to form one solid. Include no holes or slots. Verify the default overall dimensions are 120 × 12 × 8.5 mm and that both bottom contact faces have a flat length of 8 mm.

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.