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FreeCAD: How to install addon with addon manager?

Update: May 15, 2021
FreeCAD 0.19

In FreeCAD, you can install third-party workbenches and macros called "addons" via the Internet. For example, there are addons such as the following.

  • Assembly4: Workbench for assembling
  • A2plus: Workbench for assembling
  • sheetmetal: Workbench for sheet-metal working
  • BIM: Workbench for BIM (Building Information Modeling)
  • CfdOF: Workbench for computational fluid dynamics

addons are developed by a third party separate from the FreeCAD development team and are not necessarily maintained in a stable, but they allow you to use various functions that are not available with the standard features.

Steps

  1. Select [Tools]-[Addon manager…] in a menu to show Addon manager. When Addon manager starts, it gets an addons list via the Interneta and show the list.

    Fig. Addon manager
    Addon manager
  2. Show [Workbenches] tab or [Macros] tab, select the addon that you want to install, and then click the Install/update selected button to start the installation.

  3. After installation, according to the displayed instructions, restart FreeCAD to enable the installed addon.

  4. If you wish to uninstall an addon, show the addon manager in the same way, select the addon that you wish to uninstall, and click the Uninstall selected button.

If an error occurs...

  1. If you are accessing the Internet through a proxy server, you may not be able to get the addon list. In this case, click the Configure... button in the upper-right corner of the addon manager to set the proxy in the configuration dialog. After the configuration, close the addon manager and reopen it.

    Fig. Addon  manager configuration
    Addon manager configuration
  2. If you are still unable to install the add-on after doing the configuration, you can install it manually without the addon manager. Download the addon with a web browser, place it in the "Mod" folder (for workbenches) or "Macro" folder (for macros) of the FreeCAD application folder, and restart FreeCAD to load the addon.

    For example, if it is Assembly4, you can download it from "GitHub - Zolko-123/FreeCAD_Assembly4: Assembly 4 workbench for FreeCAD". And you can confirm the FreeCAD application folder by selecting [View]-[Panels]-[Python console] in the menu to display the Python console and executing the following Python code.

    print(FreeCAD.ConfigGet("UserAppData"))

    On Windows, by default, the FreeCAD application folder is "%APPDATA%\FreeCAD".