Nitro Retopo

Adriflex in Modeling


A new way to clean up
and retopologize your mesh.

Segment. Repair. Draw your topology.

Turn dense meshes with fused parts into editable pieces. For AI-generated models, sculpts, 3D scans, and other meshes that need cleaner topology.

Featured on: 80 Level · ModelingTechNote · CGbox

New in 1.7: The new Split Cut tool lets you split even high-poly meshes into parts, helping you prepare your model for retopology without first creating an optimized copy.

Split Cut: draw and adjust a contour on a 1.9-million-polygon house, separate the roof and inspect the segmented parts.

For retopology, prepare a working surface.

Verify Mesh checks density and disconnected parts. A green check means the density is suitable for drawing. Use Merge by Distance... when fragments should connect, and Create Optimized Copy if a lighter working mesh is needed. Inspect the result before drawing.

01 /  Draw the boundaries.

Build your patches with the drawing tools that suit each shape.

Curves, lines and freehand

Draw curved boundaries, sharp corners, straight lines and freehand strokes.

Ellipses and circles

Create an ellipse, constrain it to a circle and reposition it.

Follow existing edges

Trace a boundary along existing mesh edges.

Revise your boundaries

Erase boundaries to adjust the patch layout.

02 /  Edit your patches.

Split or delete a patch

S separates a patch; X deletes a patch.

Open just one boundary

Hold J and click to open one cut boundary while keeping the faces in the same object.

Focus on what matters

Isolate with Shift + H, hide with H and isolate several patches with the L lasso.

03 /  Simplify where you need it.

Brush over an area to reduce its local topology. Enable Preserve Cuts to keep the cut boundaries and connections you have already drawn. The brush can also repair small enclosed gaps that it fully covers, while protecting cuts and outer borders. Inspect the repaired area; this is not a general hole-filling tool.

Local Simplify Topology, first without Preserve Cuts, then with Preserve Cuts enabled.

04 /  Repair the gaps.

Fill holes or bridge open boundaries, and adjust the shape before applying. For targeted face-connection cleanup, use Repair Faces Sharing 2+ Edges in the Mesh Cleanup panel. In Edit Mode, select both faces to repair.

Interactive patch repair: fill a hole, adjust the surface and bridge open boundaries.

05 /  Choose how the topology flows.

Define the corners

Mark patch corners to guide the generated topology.

Explore topology patterns

Cycle topology patterns, change their orientation and add an inset.

06 /  Your new mesh, ready to refine.

Drawn boundaries become seams. Generate a separate mesh with an automatic UV unwrap.
Full knight before and after retopology, with the original dense mesh on the left and the completed topology on the right.

$25

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Details
Blender Extension Compatible Yes
Sales 200+
Rating
3 ratings
Published about 2 months ago
Blender Version 5.2
Extension Type Add-on
License GPL