https://github.com/rahix/fusedfilamentdesign

A FreeCAD PartDesign addon for FFF/FDM 3D-printing design.
https://github.com/rahix/fusedfilamentdesign

3d-printing cad freecad freecad-addons

Last synced: 4 months ago
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A FreeCAD PartDesign addon for FFF/FDM 3D-printing design.

• Host: GitHub
• URL: https://github.com/rahix/fusedfilamentdesign
• Owner: Rahix
• License: lgpl-2.1
• Created: 2025-05-11T19:31:35.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2025-12-19T11:16:16.000Z (6 months ago)
• Last Synced: 2026-01-19T22:57:43.873Z (4 months ago)
• Topics: 3d-printing, cad, freecad, freecad-addons
• Language: Python
• Homepage:
• Size: 378 KB
• Stars: 197
• Watchers: 8
• Forks: 3
• Open Issues: 15
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

          
![FusedFilamentDesign Logo](./Resources/icons/ffDesign_Logo.svg)

## FusedFilamentDesign — FreeCAD Addon

This is a [FreeCAD PartDesign][fc-partdesign] addon for FFF/FDM 3D-printing design.  It includes various tools to generate geometry for better printability of a part.

![A demo screenshot of the Hole Wizard in action](./Resources/splash.png)

## Installation

This addon is available through the [FreeCAD Addon-Manager](https://wiki.freecad.org/Std_AddonMgr).

## Usage

The addon adds a new toolbar to the [PartDesign][fc-partdesign] workbench where the new tools can be accessed.  Check the tooltips for guidance.

![Screenshot of the FusedFilamentDesign toolbar](./Resources/toolbar.png)

All tools in this addon generate parametric PartDesign features.  You do not need to have FusedFilamentDesign installed to edit parts that were made with it.

## Documentation

To find out more about using the tools included in this addon, please check the [`Documentation/`](./Documentation/README.md) subdirectory.

## Features

| | | Command | Description |

|---|---|---|:---|

| ![ffDesign_HoleWizard](./Resources/icons/ffDesign_HoleWizard.svg) | | **Hole Wizard** | Various tools for enhancing [PartDesign Hole][fc-hole] features (see below) |

| | ![ffDesign_CounterboreBridges](./Resources/icons/ffDesign_CounterboreBridges.svg) | **Counterbore Bridges** | Implementation of the [overhanging counterbore trick][df3dp-counterbore] (**R3.5**) |

| | ![ffDesign_RibThreads](./Resources/icons/ffDesign_RibThreads.svg) | **Thread Forming Ribs** | Hole geometry for [rib thread forming][df3dp-ribthreads] (**R5.4**) |

| | ![ffDesign_Teardrop](./Resources/icons/ffDesign_Teardrop.svg) | **Teardrop Shape** | Teardrop-shaped holes for [better horizontal holes][df3dp-horizontal-holes] and to avoid [seam inaccuracy][df3dp-seam] (**R2.2** & **R2.3**) |

| | ![ffDesign_RoofBridge](./Resources/icons/ffDesign_RoofBridge.svg) | **Roof Bridge** | Roof bridges for [horizontal holes][df3dp-horizontal-holes] (**R2.2**) |

| ![ffDesign_ZipTieChannels](./Resources/icons/ffDesign_ZipTieChannels.svg) | | **Zip Tie Channels** | Generate parametric [zip tie channels][df3dp-zip-ties] on a part's surface (**R4.1**) |

| ![ffDesign_AutoFillet](./Resources/icons/ffDesign_AutoFillet.svg) | | **Auto Fillet** | Automatically add [fillets on all vertical edges][df3dp-vertical-fillets] of a part. (**R2.1**) |

| _Planned_ | | **Seam Groove** | Generate a seam groove to control [where the slicer will place the perimeter seams][df3dp-seam] (**R2.3**)|

| _Planned_ | | **Sacrificial Layer** | Generate a [sacrificial layers][df3dp-sacrificial] for some surface with holes (**R3.4**) |

(The **R#.#** numbers reference the rules from my [Design for 3D-Printing][df3dp-main] guide)

## Changelog

To follow updates of this addon, please check the [Releases Page](https://github.com/Rahix/FusedFilamentDesign/releases) or the [CHANGELOG](./CHANGELOG.md) file.

## License

This addon is licensed under the `LGPL-2.1-or-later` license.  See [LICENSE](./LICENSE) for more info.

[fc-partdesign]: https://wiki.freecad.org/PartDesign_Workbench

[fc-hole]: https://wiki.freecad.org/PartDesign_Hole

[fc-additional-workbenches]: https://wiki.freecad.org/How_to_install_additional_workbenches

[df3dp-main]: https://blog.rahix.de/design-for-3d-printing/

[df3dp-counterbore]: https://blog.rahix.de/design-for-3d-printing/#the-overhanging-counterbore-trick

[df3dp-ribthreads]: https://blog.rahix.de/design-for-3d-printing/#rib-thread-forming

[df3dp-horizontal-holes]: https://blog.rahix.de/design-for-3d-printing/#horizontal-holes

[df3dp-seam]: https://blog.rahix.de/design-for-3d-printing/#seemingly-seamless

[df3dp-sacrificial]: https://blog.rahix.de/design-for-3d-printing/#sacrificial-layers

[df3dp-zip-ties]: https://blog.rahix.de/design-for-3d-printing/#zip-tie-channels

[df3dp-vertical-fillets]: https://blog.rahix.de/design-for-3d-printing/#chamfers-vs-fillets