Decal Forge Add-On + Library brings decal stamping into Blender without baking, nodes, UV unwrapping, or external apps. You stamp decals directly onto any 3D model, layer multiple on top, and erase the parts you don't need, all in real-time on the surface with full brush control.
The workflow runs in three steps: pick a decal, scratch, or grunge texture from the built-in library, click on the model to project it in place, then stack, erase, flip, and rotate as needed. The included library holds 500+ items across two collections. The Scratch Collection covers scratches, dirt, and grunge for hard surface props, weapons, vehicles, sci-fi assets, and game-ready models. The Decal Collection gathers warnings, labels, and industrial signage such as hazard signs, arrows, voltage warnings, biohazard markers, and weight limits, organized by category.
Built by Milad Kambari of 3DRedbox Studio, the add-on works in Blender 4.2 through 5.1 and supports the Cycles and Eevee render engines. It's released under the GPL license, and a demo video is available.