by Orange Turbine·Modeling
Images © Orange Turbine. Used for product review; image policy.
A staple among Blender artists for manual retopology, Retopoflow 4 sits at rank 24 in the Superhive library and earns attention for its complete rewrite that folds Contours, PolyStrips, Strokes, PolyPen, and Relax into Blender's Edit Mode.
Retopoflow 4 is a comprehensive set of retopology tools for Blender, built to create custom, clean, mid or low polygon meshes on top of high-resolution sculpts or scans. Version 4 is a complete rewrite that adds new features, integrates the tools into Blender's Edit Mode, and boosts performance.
The toolkit spans several dedicated tools. Contours places and adjusts loops around cylindrical forms, walking the loops around the mesh rather than using a shrink wrap approach. PolyStrips lets you sketch out strips, bridge over existing geometry, and manipulate quad selections like a Bezier curve, with everything snapped to the surface. Strokes extends loops and fills larger areas with interpolated grids of quads, while PolyPen gives precise control over fine details using triangles, quads, or a combination. Relax shifts vertices toward an even layout while keeping them snapped to the high poly.
Orange Turbine, a project of Autotroph, has developed Retopoflow since 2013 and supports Blender development through its Corporate Gold sponsorship of the Blender Development Fund.
Retopoflow 4 is best for artists retopologizing high-resolution sculpts or scans into clean mid or low polygon meshes for rigging, animation, texturing, and rendering.
Retopoflow 4 is completely free to download and use.
Retopoflow 4 is a complete rewrite that integrates its tools directly into Blender's Edit Mode. This version also adds new features and boosts performance over earlier releases. The toolkit includes Contours, PolyStrips, Strokes, PolyPen, and Relax, all aimed at building clean mid or low polygon meshes on top of high-resolution sculpts or scans. For the specific Blender versions supported, check the documentation on the developer's page before installing.
Retopoflow 4's Contours tool places and adjusts loops around cylindrical forms by holding Ctrl and left-click dragging, wrapping a loop around the high poly surface. You can change the number of vertices in the loop by scrolling. Rather than relying on a simple shrink wrap approach, the algorithm walks the loops around the mesh, which lets it wrap correctly even when several forms, such as overlapping fingers, sit close together in the view.
Retopoflow 4 is listed as free here, though licensing terms can change over time, so check the developer's page for the current details before you download. Orange Turbine notes that purchasing Retopoflow helps fund its Corporate Gold sponsorship of the Blender Development Fund, which contributes to Blender's ongoing development. The developer is a project of Autotroph and has worked on retopology tooling since 2013.
Retopoflow 4 has a demo video available on YouTube for those who want a look before installing. Alongside it, Orange Turbine provides documentation and support, plus ongoing product updates. To learn how individual tools such as Contours, PolyStrips, Strokes, PolyPen, and Relax fit into the retopology workflow, the documentation on the developer's page works as a companion reference to the video.
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