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For those who don’t know the tool: NKZ Retopia is Eduardo Bartali’s Blender add-on for drawing retopology directly over a sculpt or scan. It builds quad patches, strips and tubes from your strokes, handles surface placement and spacing, and leaves you with a normal Blender mesh. You choose the edge flow. The software does the repetitive placement. Your character’s elbow remains a creative responsibility, rather than an exciting surprise for the rigger.
Version 1.4.0, released on 19 October 2026, improves drawing over folded surfaces, rebuilds Relax, connects contour cuts more reliably and lets you save without leaving an active tool. There are also twelve ways to animate newly created polygons into position. Retopology has apparently reached the stage where even the quads expect an entrance. Underneath that small flourish is a toolkit aimed at a familiar job: turning a detailed surface into topology whose loops you actually meant to put there.
Draw the patch, spare yourself the vertex census
Start by selecting a sculpt or scan and pressing Start Retopia. The add-on creates a separate retopology mesh linked to the source, and D opens its fifteen-tool pie menu. For a broader area, Draw lets you sketch the boundaries in any order, recognises the region and fills it with a quad grid. You can move the preview’s corners and change its density before applying it. That gives you a way to establish a patch and judge its structure before committing to every individual vertex, a perfectly respectable hobby which sometimes gets mistaken for the actual modelling job.
Version 1.4.0 lays Draw’s preview grid onto the surface along your line of sight, excluding hidden and back-facing geometry from snapping and keeping long strokes evenly spaced. Bartali describes this as preventing overlapping layouts on wrinkled or folded sculpts. The intended benefit is straightforward: work on the visible fold without the surface behind it volunteering to help.
Precise Draw takes over where a whole patch would be excessive. Click, drag and release to extrude individual quads from edges or corners, snapping onto nearby geometry to close a structure as you build. In 1.4.0, Ctrl+drag also snaps and merges one vertex onto another. That is useful at a meeting point between pieces: close the connection while you are already there, rather than leaving a small archaeological site for the cleanup pass.
For longer runs, Strip creates a rigid band of square quads from a stroke, with height and subdivisions adjustable using the mouse wheel. It now starts with four elements and then adapts as before. Strokes, a mode within Strip, instead treats your line as the band’s centre and builds evenly on both sides. You can extend it with further strokes or close it back onto its start to form a ring; Ctrl+Wheel changes width and Shift+Wheel changes divisions. Right-click once to preview and again to build. Choose this when you want to follow a path through the surface while controlling the band around it.
Extend Border grows an entire side from existing topology. Shift+drag from a border in Precise Draw, and new rows are laid onto the sculpt one at a time to keep them square over curved surfaces. Move sideways to lean the band; row counts can be automatic or adjusted with Shift+Wheel. Edge Flow continues an existing row with matching topology. Both are ways to carry an established structure forwards, rather than starting every new patch as though the previous one were somebody else’s problem.
Relax should not be a threat
Relax evens out vertex spacing and squares up quads while highlighting the vertices under the brush. The 1.4.0 rebuild targets noisy and layered surfaces such as sculpted hair and folds, preserving border shapes as it redistributes the interior. Bartali says it avoids distorted quads, flipped faces, bunched vertices and jumps onto another part of the sculpt. The practical aim is to tidy the patch you have built while keeping its outline, rather than asking the brush to reinterpret the anatomy. A brush named Relax has made a fairly specific promise.
Contours wraps rings around arms, fingers and necks, adapting density to the existing retopology and allowing rows, loops and segment counts to be adjusted. Spine handles the longer version of that job: draw one line along a limb and it constructs the tube’s rings from the sculpt’s actual cross-sections, perpendicular to the limb. The tube starts and ends where the stroke does, and its construction is independent of the viewing angle. For a finger, this means describing the finger once instead of introducing yourself separately to every ring.
A Spine stroke beginning at a tube’s end extends it; a stroke running from one tube to another joins them. Hold Ctrl to force a new tube instead. End rings remain locked to the sculpt during Relax, so tidying the middle does not pull the ends into the surface. In 1.4.0, cuts made far apart connect into the same tube more reliably, including along curved and tapering tails, horns and fingers. New tubes start with twelve segments, and the display reports segments around, rows along, such as 12 × 6, and the total. That gives you the numbers before you discover what the next patch thinks of them.
Join the pieces before they form a committee
Stitch Edges bridges separate patches with a row of quads: choose one side, then the facing side, and it joins the full borders from corner to corner, including curved ones. Circular Cap tackles the open end of a finger, horn or claw. Click the furthest tip and it builds circular topology along the remaining form to that point, with Ctrl+Wheel controlling ring count. These are finishing operations for the moments when most of the surface is covered and the remaining openings have begun to look personally accusatory.
Circle and Circle Loop create quad disks or rings for areas such as eyes, mouths and pipes. Loop & Fill creates rings and fills holes, with Tab cycling through Grid, 3 Poles, 5 Poles and Fan before confirmation. Ctrl+Wheel changes the layout, Shift+Wheel rotates it and Alt+Wheel adjusts inner rings; right-click commits the result. Small holes with an inner corner can be refilled with the exact faces previously removed. Previewing the alternatives lets you choose the topology at the opening while it is still a choice, rather than a surprise waiting under subdivision.
Loop Cut and Knife add loops under the pointer and let you plan several cuts before applying them together. Remove Loop goes the other way: click an edge to highlight its full loop, then right-click to remove it and merge the adjacent rows. When a region has acquired more density than its neighbours, that provides a direct way to thin it out. Move, Conform, Merge and Align supply the local cleanup actions, while Pins lock completed areas so the finished work can stop attending every subsequent adjustment.
Save first, choreography second
Ctrl+S now saves the Blender file while a Retopia tool is active; Ctrl+Shift+S opens Save As, after which the tool resumes. Edit Mode autosave came with the 1.3 series, and sessions can be saved, closed and resumed later. Manual saving inside an active tool is hardly a spectacular feature, but neither is explaining why the last hour exists only in your increasingly unreliable memory.
Creation Animation runs when you confirm a preview with a right-click. The twelve styles are Grow, Ripple, Sweep, Drop, Assemble, Pop, Sparkle, Spin, Flip, Tornado, Scatter and Bounce, with adjustable speed and an off switch in Display. It works with Draw, Strip, Edge Flow, Strokes, Contours in both Cuts and Spine modes, Circular Cap, Stitch Edges, Extend Border and Loop & Fill. It provides visible feedback when the new polygons are created. Whether that feedback needs a Tornado is a personal matter between you and your Display settings.
A centre line with some backbone
Smart Symmetry finds the sculpt’s centre even when an asymmetric weapon, tail or oversized hand distorts its overall bounds. You can work with live symmetry or keep the mirror as a transparent preview. That matters when the character is symmetrical enough to model in halves but has brought a conspicuously asymmetrical accessory to the appointment. The sword should not get to decide where the nose goes.
Make the problems visible before handover
Analysis overlays its information above the Solid and Glow displays. Its Quality Map colours faces green, yellow or red using their angles, proportions and size; Show Poles highlights poles, triangles and n-gons. Select Bad Quads gives you a direct selection to address with Relax, and selection by count separates faces with fewer or more than four vertices and poles with valence below or above four. It turns “something looks odd around here” into a more specific inspection task, which is usually an improvement on staring harder.
Target Faces adds a polygon budget and progress bar, including the mirrored geometry. That is useful while allocating density across the character: the visible half does not get to pretend the other half is somebody else’s budget. Subdivision Preview overlays the smoothed result at one to three levels, keeps its evenly spaced lines inside the retopology borders and draws the cage above it. Nothing is applied to the mesh. You can inspect the smooth result while choosing the cage, rather than treating subdivision as a ceremonial reveal at the end.
Face Groups organise the growing retopology with colour. Auto Group assigns each new structure its own group as it is created, while Group All assigns a separate group and unique ID to every structure in one operation. Group lists are stored per retopology object, and older files convert automatically. Combined with Pins, this keeps separate pieces legible while you work on the next one. Colour coding will not make the artistic decisions, but it can at least prevent yesterday’s decisions from disappearing into a bowl of identical edges.
Your mesh can leave without an escort
The output is standard Blender geometry, so you can continue editing it with other tools. Retopia runs locally without a cloud service, account or extra libraries, and the sculpt remains separate from the retopology object. That is a useful arrangement for a modelling workflow: a specialist tool helps build the mesh, then the mesh gets on with being a mesh. It need not retain a lifelong emotional attachment to the tool that made it.
NKZ Retopia 1.4.0 is available through Superhive as a Blender extension ZIP, with written documentation in the Documentation tab and free updates. The listing covers Blender 4.5–5.2 and says it was developed and tested on 5.2. It uses GPL-3.0-or-later licensing and permits commercial use of the work you create. The version history gives the release details.
NKZ Retopia: facts
| Product | NKZ Retopia |
| Developer | Eduardo Bartali / NETKINGZ |
| Current version | 1.4.0, released 19 October 2026 |
| Host | Blender 4.5–5.2; developed and tested on Blender 5.2 |
| Delivery | Blender extension ZIP; written documentation; free updates through Superhive |
| Output | Standard editable Blender mesh |
| Operation | Local, offline; no cloud service, account or extra libraries |
| Licence | GPL-3.0-or-later; commercial use of generated work permitted |
| Price | US$29.99 regular price; US$19.79 displayed on 19 October 2026. Promotion end date not confirmed. |
| Official page | NKZ Retopia on Superhive |
Article details
- Published
- Author
- Bela Beier
- Reading time
- About 10 min
- Word count
- 1,805