by Paul Thien Store·Modeling
Illustrative cover generated by AnyPlugins — no product screenshot available.
Mergetools earns its place in the Superhive library as a focused Blender 5.1 workflow for hard-surface boolean design, seam finishing, material transitions, and export-ready baking. It keeps source meshes editable as hidden sources and commits only at final bake.
Mergetools brings non-destructive boolean merging to Blender through native Geometry Nodes. Select two or more mesh objects and, from the right-click MergeTools menu, combine them into one connected result while the original source meshes stay intact and hidden from render. Difference handles boolean cuts, with a Swap Objects click to reverse which object is the base and which is the cutter.
The generated result lives as a separate Fusion Object, linked back to the source meshes and driven by Geometry Nodes. From the N-panel you tune Fillet Radius, Fuse Spread, Tension, Surface Smooth, Subdivision Surface, and more, all scale-independent. An optional Weld section sweeps procedural weld beads along the actual intersection edges, and material blending cross-fades two node-based materials across the junction while storing an mt_seam attribute for shader effects.
Save named presets, jump between results in the scene, or restore the original objects. When the shape is approved, bake to real geometry; when blend data is present, MergeTools converts internal attributes into a standard UV layer and real material slots. Everything runs locally inside Blender, with no external services or upload step.
Mergetools is best for blender artists doing hard-surface boolean design, seam finishing, material transitions, and export-ready baking who want to keep source meshes editable until commit.
Mergetools is completely free to download and use.
Mergetools requires Blender 5.1 or newer, since it relies on the Geometry Nodes sockets and SDF nodes that older versions may not include. It is built specifically for the Blender 5.1+ workflow, so running it on earlier releases can leave required features unavailable. On a supported version, the add-on generates its results entirely through native Geometry Nodes inside Blender, without additional engines, so you can merge, cut, weld, and bake using only what the host application already provides.
Mergetools works on selected mesh objects only. Curves, text, volumes, and other object types are not supported directly, so you should convert them to mesh before merging. When you select two or more mesh objects, the active object is treated as the base for a Difference operation, and the add-on combines the selection into one connected result. Converting non-mesh objects to mesh first ensures the boolean, fillet, and welding tools have real geometry to operate on.
Mergetools runs 100% locally inside Blender using native Geometry Nodes, with no external services and no upload step, so your meshes never leave your machine. Bear in mind that high subdivision, complex booleans, material blending, and weld beads can be processor-intensive, so heavier setups may put more load on your hardware. The non-destructive design keeps your source meshes preserved until you choose to bake, which means you can work from start to finish offline.
Mergetools treats the active object as the base by default when you run a Difference operation, subtracting the other selected objects as cutters. If the cut goes the wrong way, click Swap Objects (A to B) to reverse which object is the base and which is the cutter at any time. Because the workflow is non-destructive, you can flip the direction and re-tune the Junction and Fillet controls at the cut edge without recommitting your source geometry.
Mergetools is listed as free in this catalog. For current licensing terms, and to download the add-on package with its included GIF previews, check the developer's page. Once installed, it adds a MergeTools menu to Blender's right-click context menu and an N-panel for tuning the generated result. The add-on runs locally inside Blender with no external services and no upload step, so you can merge, apply Difference cuts, weld, and bake without your meshes leaving your machine.
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