FreeCAD and DWG Import/ko



FreeCAD 에서 DWG 파일 작업이 어려운 이유 ?
DWG 파일은 내용을 이진 숫자로 기록하고 밀봉한 형식으로 되어 있어서 FreeCAD 에서 직접적으로 처리되지 않습니다. 3rd 단체가 제작한 '파일변환' 기능을 이용하여, DWG 파일을 DXF 파일로, 또는 그 반대로 변환 하는 것을 거쳐야 합니다.



LibreDWG

 * 홈 페이지 : https://www.gnu.org/software/libredwg/
 * 인증 : GPLv3-or-later
 * 어떤 경우, DWG 파일 불러오기, 내보내기 하기 위해 사용 되었음

GNU LibreDWG is a free C library to handle DWG files. It aims to be a free replacement for the Open Design Alliance Drawings SDK libraries. Be aware that, since libreDWG is a work-in-progress, it lacks support for some DWG entities.

Installation Windows
Downloading and unzip the appropriate pre-compiled Windows binary. Place the executable in the OS search path,, for automatic detection , or set the path manually. See Import Export Preferences.

Installation Linux/Unix systems
Place the executable in the OS search path,, for automatic detection , or set the path manually. See Import Export Preferences.

Installation openSUSE
To prevent problems you must use LibreDWG package compiled for the installed openSUSE OS distribution. LibreDWG is typically installed with YAST (abbr. Yet another Setup Tool), the Linux operating system's setup and configuration tool.

The more experienced user first gets an overview of possible packages provided. Note: openSUSE has several options to choose from when downloading LibreDWG. To view these options, visit Survey of provided LibreDWG packages on openSUSE.

For e.g. Intel or AMD 64-bit desktops, laptops, and servers the (x86_64) release is the one to select. So libredwg0 and libredwg-tools are of the right choice to install.

It is recommended to grab the binary packages directly. Then select the correct distribution for your installed openSUSE OS.

In any terminal/console (root rights required) the installation will be carried out with:

Place the executable in the OS search path,, for automatic detection , or set the path manually. See Import Export Preferences.



ODA Converter (formerly Teigha Converter)

 * 홈페이지: https://www.opendesign.com/guestfiles/oda_file_converter
 * 라이선스: freeware
 * optional, used to enable import and export of DWG files


 * homepage: https://www.opendesign.com/guestfiles/oda_file_converter
 * license: freeware
 * optional, used to enable import and export of DWG files

The ODA File Converter is a small freely available utility that allows to convert between several versions of DWG and DXF files. FreeCAD can use it to offer DWG import and export, by converting DWG files to the DXF format under the hood, then using its standard DXF importer to import the file contents. The restrictions of the DXF importer apply.

설치
On all platforms, only by installing the appropriate package from https://www.opendesign.com/guestfiles/oda_file_converter. After installation, if the utility is not found automatically by FreeCAD, you might need to set the path to the converter executable manually. open Edit → Preferences → Import-Export → DWG and fill "Path to Teigha File Converter" appropriately.

If the utility is not found automatically by FreeCAD after installation, you need to set the path to the executable manually. See Import Export Preferences.

QCAD pro

 * homepage: https://qcad.org/en/qcad-command-line-tools#dwg2dwg
 * license: commercial
 * optional, used to enable import and export of DWG files

QCAD is a well-known open-source DXF-based 2D CAD platform. It also offers a paid pro version, which is basically the open-source version plus support for the DWG format. When buying the pro version, QCAD also includes a DWG to DXF conversion utility that can be used by FreeCAD.

Installation
If the utility is not found automatically by FreeCAD after installation, you need to set the path to the bash file (Linux and macOS) or batch file (Windows) manually. See Import Export Preferences.

CADExchanger Workbench
Installing the CADExchanger Workbench allows for working with DWG files through integration with the paid commercial file converter product CADExchanger. Just follow the instructions in the GitHub repository. You can discuss this workbench on its forum thread.

At the moment, the CADExchanger way is the only one that allows to work with 3D DWG files, by converting them to other 3D formats.



DoubleCAD XT
There is also DoubleCAD XT (https://www.turbocad.com/content/doublecad-xt-v5). The program is free for personal and commercial use. It requires a free sign-up to receive an activation code via E-Mail. This Program is windows-only. Note: it does not seem to have been updated for years.

NanoCAD 5.0
There is also nanoCAD 5.0 (https://nanocad.com/products/nanoCAD/download/). The program is free for personal and commercial use. It requires a free sign-up to receive an activation code via E-Mail. This Program is windows-only.



AutoCAD 파일을 친근한 형식으로 내보내기
Exporting your AutoCAD files in a more FreeCAD friendly format, like DXF R12 or R14, SVG, and if version supports it, IGES. All are better alternatives to the DWG format when using FreeCAD.

Exporting your AutoCAD files in a more FreeCAD friendly format, like DXF R12 or R14, SVG, and if version supports it, IGES. All are better alternatives to the DWG format when using FreeCAD.

It is important to note that there is no difference between the contents of a file saved in DWG or DXF formats, provided it is the same version (ex. DWG 2014 vs. DXF 2014). Both formats are maintained by Autodesk, and they both support exactly the same features. The difference is that DWG is closed (machine-encoded) while DXF is open.



도우려면 무엇을 할 수 있나요?


Promote the use of alternative formats
간단히 말해, DWG 형식의 작업을 수락하는 것을 중지합니다. 실제로, 이것은 종종 말하기보다 쉽습니다. 그러나 가능하면 언제든지 FreeCAD 사용자와 지지자들이 DWG 형식을 피하고 거부하는 것은 나쁜 관행은 아닙니다.

Simply put, stop accepting work done in DWG format. In practice, this is often easier said than done. Still, it would not be bad practice for users and supporters of FreeCAD to avoid and reject the DWG format whenever possible.

Use the LibreDWG library and file bug reports
In development version as mentioned above you can switch from the proprietary ODA Converter to the free software LibreDWG library for DWG (and DXF) files. Please do this and report any problems you encounter.