by DaKashi·Workflow
Images © DaKashi. Used for product review; image policy.
Earns its place in the Blender extensions library as a focused set of utilities aimed specifically at Goldsource model work, from limb-name swapping to unused vertex group cleanup.
GS Model Helper is a Blender add-on from DaKashi built for working with Goldsource models, the format used by Half-Life. It gathers a set of tools that handle naming and cleanup tasks for these models inside Blender.
On the naming side, it includes a prefix renamer for vertex groups and skeletons, a Left/Right swapper, a Valve ↔ Gearbox limb name swapper, and a material renamer that enforces .bmp naming. For meshes, it adds texture interpolation controls set to Closest or Linear, vertex weight quick-fix tools, a vertex overlap analyzer with selection, and cleanup for unused vertex groups. The add-on requests file access, which it uses to rename and clean up materials and textures.
The current release is version 2.2.0, updated in September 2025, and it works with Blender 4.2 LTS and newer. The add-on is written in Python and released under the GNU General Public License v3.0 or later. Installation and usage instructions are available through the developer's documentation linked from the developer's page.
GS Model Helper is best for blender users working with Goldsource (Half-Life) models who need naming, texture and vertex cleanup tools.
GS Model Helper is completely free to download and use.
GS Model Helper is compatible with Blender 4.2 LTS and newer, so any release from that version forward should run it. It is distributed as a Blender extension and can be added by dragging the downloaded file into Blender or by installing it from disk. If you are on an older Blender build, you would need to update to at least 4.2 LTS before the add-on's tools become available in your session, since that is the stated minimum version.
GS Model Helper installs like other Blender extensions: you can drag and drop the add-on file directly into Blender, or download it and use Install from Disk. Full installation and usage instructions are provided in the developer's documentation, which is linked from the developer's page. The add-on also requests file access permission, which it uses to rename and clean up materials and textures, so grant that permission when prompted in order to use those particular tools.
GS Model Helper is listed as free here, and it is released under the GNU General Public License v3.0 or later. That license lets you use, modify and redistribute the add-on, provided you keep attribution to the original author, DaKashi, and distribute any changes under the same license. For the latest licensing terms and any specific conditions, check the developer's page and the included LICENSE file before redistributing your own version of the add-on.
GS Model Helper includes a Valve ↔ Gearbox limb name swapper as one of its naming tools, alongside a prefix renamer for vertex groups and skeletons and a Left/Right swapper. It also offers a material renamer that enforces .bmp naming. These sit next to its mesh utilities, which include texture interpolation controls set to Closest or Linear, vertex weight quick-fix tools, a vertex overlap analyzer with selection, and cleanup for unused vertex groups.
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