v1.0.1 · Fusion 360 add-in · Apache-2.0

Bobbin Exporter

A Fusion 360 add-in that writes a CalcSX-ready .bobsx file from a bobbin CAD body.

Open a bobbin in Fusion 360, pick the winding-groove faces, and the add-in writes a .bobsx file containing per-channel centerlines and surface normals. Drop the file into CalcSX as a coil-geometry input.

Install

Version: 1.0.1
Requires: Autodesk Fusion 360
License: Apache-2.0
Format: Zip archive, 12 KB

Download calcsx_exporter.zip

Setup

Unzip calcsx_exporter.zip.

Move the unzipped calcsx_exporter folder into Fusion 360’s add-ins directory:

# macOS
~/Library/Application Support/Autodesk/Autodesk Fusion 360/API/AddIns/

# Windows
%APPDATA%\Autodesk\Autodesk Fusion 360\API\AddIns\

In Fusion: Utilities → Scripts and Add-Ins → Add-Ins, select CalcSX Exporter, click Run.

Use

The CalcSX Bobbin Export dialog open in Fusion 360, with groove faces highlighted in blue along a bobbin model. — Open a bobbin body in Fusion 360, run **CalcSX Bobbin Export**, and select the winding-groove faces. Set the sampling resolution and click OK.

Confirmation dialog showing the exported magnet.bobsx file path. — The add-in writes the `.bobsx` file (and a debug CSV) to the location of your choice. Open the `.bobsx` in CalcSX to import the coil geometry — surface normals carry through automatically.

Resources

Source repository — Apache-2.0; issues and pull requests welcome.
CalcSX — the magnetostatics simulator that consumes .bobsx files.