Help centre

How to do it in Kozorosa.

Short articles, one per tool and task. Every picture was taken in the application by the help recorder, which runs each article in a browser and checks that it worked — so what you see is what the current version does.

Workspace

WorkspaceOrbit, pan, zoom and standard viewsTurn, slide and zoom the camera around your model with the Camera tools, and jump to a standard view (Top, Front, Iso…) from the bar above the view.

WorkspaceCut the model with a section planeA section plane slices the view of your model so you can see inside it — holes, pockets and wall thicknesses — without changing the geometry.

WorkspaceApply a material to a bodyMaterials give bodies their colour and finish — oak, steel, glass, brick and more. Add one from the library in the Materials panel, then paint it onto a body.

WorkspaceRoll back, edit and suppress steps on the timelineThe timeline under the view lists every step that built your model, in order. Click a step to see the model as it was then, change a step's numbers and everything after it rebuilds, or suppress a step to try the model without it.

Drawing

DrawingDraw lines and close a faceLine draws straight edges point by point on the ground or on a face. Bring the last point back to the first and the closed loop becomes a face you can push into a solid.

DrawingDraw a rectangleRectangle draws a four-sided face from two opposite corners, on the ground or on any flat face. Type the width and height to make it an exact size.

DrawingDraw a circleCircle draws a round face from its centre and radius, on the ground or on any flat face — ready to push into a cylinder or cut a hole.

DrawingDraw a polygonPolygon draws a regular face with as many equal sides as you ask for — a hexagon, an octagon — from its centre and radius.

DrawingDraw an arc2 Point Arc draws a curved edge from its two ends and how far it bulges. Use arcs to round off an outline before you close it into a face.

Modeling

ModelingPlace a box, cylinder or sphereThe Primitives group places ready-made solids — box, cylinder, cone, sphere and torus — with a few clicks or typed sizes.

ModelingPush/Pull a facePush/Pull extrudes any flat face of a solid by a distance: raise a slab into a block, sink a pocket, or thicken a wall — and the solid stays a clean B-rep.

ModelingMove (and copy) a bodyMove slides the selected bodies from one point to another, by a pointer gesture or an exact typed distance. Switch on Copy and it leaves the original where it was and places a copy instead.

ModelingRotate a body by a typed angleRotate turns the selected bodies about an axis through a pivot you click. Set the angle by moving the pointer, or type it exactly.

ModelingScale a bodyScale makes the selected bodies bigger or smaller by a factor, uniformly or along one axis at a time.

ModelingSweep a profile along a path with Follow MeFollow Me drives a flat face along a path of lines or curves and leaves the solid it sweeps out: a pipe from a circle, a handrail, a moulding round a corner.

ModelingOffset a face's edgesOffset draws a copy of a flat face's outline a set distance inside or outside it, as a new face. Inset the top of a slab, then push the new face down to make a tray or up to make a plinth.

Sketch

SketchCreate a sketch and constrain itA sketch is a 2D drawing on a plane whose shape is held by dimensions and constraints, not by where you happened to click. Change a dimension later and the sketch, and every solid built from it, follows.

SketchExtrude a sketch profile into a solidExtrude turns the closed outlines of a finished sketch into a solid of the depth you give it. The solid stays tied to the sketch: change a dimension and it rebuilds.

Features

FeaturesRound edges with FilletFillet rounds the edges of a solid to a radius you set. Pick as many edges as you like and round them in one step.

FeaturesBevel edges with ChamferChamfer cuts the edges of a solid to a flat bevel. Give it one distance, two distances, or a distance and an angle.

FeaturesHollow a solid with ShellShell hollows a solid out to an even wall thickness, leaving open the faces you pick — a box becomes a tray, a block becomes a casing.

FeaturesSubtract one body from anotherSubtract cuts one solid out of another: a cylinder through a block leaves a hole, a box across an edge leaves a notch.

FeaturesRepeat a body in a linear patternRectangular Pattern repeats bodies in a row, or in a grid with a second direction, at an even spacing. Use it for anything that comes in equal steps: posts, shelves, holes in a plate.

FeaturesMirror a bodyMirror makes a reflected copy of bodies across a plane or a flat face. Model one half of a symmetric part and mirror it to get the other.

FeaturesLoft between two profilesLoft builds a solid that blends smoothly from one face to the next — a square base into a round top, for example.

Assemblies

AssembliesAdd a joint between two componentsA joint connects two components and says how one may move against the other — turn, slide, or not at all. Pick a face, a circular edge or a corner on each part, and the second part is brought onto the first.

Drawings

DrawingsMake a 2D drawing sheet from a modelA drawing is a sheet of paper with views of your model on it — a base view, views projected from it, an isometric — and it follows the model, so it is never out of date. Export it as PDF, SVG or DXF.

Simulation

SimulationRun a static stress studyA static stress study tells you how far a part moves under a steady load and where it is worked hardest. Give it a material, hold it somewhere, push on it, and solve.

CAM

CAMGenerate a toolpath and G-codeThe Machining page turns your part into a milling program: add an operation to a setup and its toolpath is computed straight away from the part as it stands, then post it as G-code for your machine's control.

Files

FilesExport to STEPSTEP is the format every CAD program reads. Export your model as a .step file from the top bar's Export menu, with its solids exact — not a mesh.

Automation

AutomationDesign in AI mode — and how it differs from the assistantAI mode turns the workspace into a conversation: the modelling tools are put away and the assistant builds the model from what you describe, while you point, orbit and measure. The assistant on its own is a helper beside the tools; AI mode makes it the one who models.

AutomationRun a Python script on the modelThe Python console runs a script against your model through the same actions as the API — loops, arithmetic and tables of sizes that would take hundreds of clicks. A whole script is one edit and one undo step.

AutomationConnect an AI agent (Claude Code, Cursor…) over MCPKozorosa has an MCP server, so a coding agent such as Claude Code, Codex or Cursor can list and run the studio's actions and read your models. The Connect an AI agent dialog gives you a token and the exact snippet to paste for each agent.

Modules

ModulesPlace timber beams and columns from the catalogueThe Timber group's Column and Beam tools draw elements with real products from your market's catalogue — solid, KVH, Duo/Trio, glulam, LVL — so every element knows its section, grade and length for the lists. Here they frame a 3.6 × 2.8 m pergola: four posts, two glulam beams and five joists.

ModulesJoin timber members and get the cutting listThe Joint tool cuts a carpenter's joint — tenon and mortise, dovetail, half lap, birdsmouth and more — into two timber members in one edit, and the cutting list and BTLx file carry every cut to the saw and the joinery machine.

ModulesConnect steel members in one editThe Steel module's Connection tool joins two members with everything the joint needs — plate, end cut, bolts with their holes and the weld — in a single edit you can undo, change or remove as one.

ModulesLay out a light-gauge steel wallThe LGS module frames a cold-formed steel wall panel from two clicks — plates, studs, noggings and openings — computes the roll-former's dimples, notches and holes at every intersection, and writes the machine file.

ModulesCut CLT walls into panelsThe CLT module draws cross-laminated timber walls as a chain with their corners resolved, cuts each wall into panels the producer can press, and lays those panels out on master panels and trucks.

ModulesBuild prefabricated timber-frame wallsThe Timber frame module draws a chain of framed walls from a build-up — studs, plates, boards laid in sheets, battens and lining — with the corners joined and each wall split into elements a truck can carry.

ModulesDesign a stair and check it against the rulesThe Stairs module builds a complete timber stair — treads, risers, stringers, newels, handrail and balusters — and checks it live against your market's building rules, so you see at once which number to change.

ModulesCover a roof and get its quantitiesThe Roofing module lays tiles, slates, shingles or metal on a timber roof in one click — counter-battens, battens on a gauge that fits whole courses, and the covering itself — then lists the course layout and everything to order.

Every tool

All 107 tools, and what each one does.

The application's rail, group by group, with each tool's icon and name as you will find them — and whether it comes with Kozorosa or with a construction module. The workspaces and services round the model follow.

Principal

Tool	What it does	Comes with
Select`Space`	Picks objects, faces and edges to work on, one by one or in a window.	Kozorosa
Make Component`G`	Groups objects into a component: one definition you can place again without copying it.	Kozorosa
Eraser`E`	Erases objects, guides, dimensions and sections — or hides them.	Kozorosa
Paint Bucket`B`	Paints a material onto an object, samples one, or repaints everything that looks the same.	Kozorosa
Tag	Assigns a tag to an object, to sort and filter the model.	Kozorosa

Sketch

Tool	What it does	Comes with
Create Sketch`K`	Starts a constrained 2D sketch on an origin plane, a construction plane or a flat face.	Kozorosa
3D Sketch	Starts a 3D sketch whose points lie in space: the paths sweeps follow and the rails lofts take.	Kozorosa

Drawing

Tool	What it does	Comes with
Line`L`	Draws edges point by point; a closed loop makes a face.	Kozorosa
Freehand	Draws a freehand curve; ending near the start makes a face.	Kozorosa
Rectangle`R`	Draws a rectangle from two corners or typed sizes, on the ground or on a face.	Kozorosa
Rotated Rectangle	Draws a rectangle at any angle: one side, then its height.	Kozorosa
Circle`C`	Draws a circle from its centre and radius, or from a diameter.	Kozorosa
Polygon	Draws a regular polygon with any number of sides, inscribed or circumscribed.	Kozorosa
Arc	Draws an arc from its centre, its start and its angle.	Kozorosa
2 Point Arc`A`	Draws an arc from its two ends and its bulge.	Kozorosa
3 Point Arc	Draws an arc through three points.	Kozorosa
Pie	Draws a pie slice: a closed sector from a centre and an angle.	Kozorosa

Primitives

Tool	What it does	Comes with
Box	Makes a solid box from a base and a height, or from typed sizes.	Kozorosa
Cylinder	Makes a solid cylinder from its base circle and height.	Kozorosa
Cone	Makes a solid cone from its base and height.	Kozorosa
Sphere	Makes a solid sphere from its centre and radius.	Kozorosa
Torus	Makes a solid torus from its ring and tube radii.	Kozorosa

Edit

Tool	What it does	Comes with
Move`M`	Moves the selection by a distance, or copies it — into an array if you ask.	Kozorosa
Push / Pull`P`	Extrudes a face into a solid, or pushes it in to cut — by dragging or a typed distance.	Kozorosa
Rotate`Q`	Turns the selection about a pivot by an angle, or copies it round.	Kozorosa
Follow Me	Sweeps a face profile along a path.	Kozorosa
Scale`S`	Resizes the selection, uniformly or one axis at a time.	Kozorosa
Offset`F`	Draws a face's outline again at a distance inside or outside it.	Kozorosa
Fillet	Rounds edges, along tangent chains or whole loops.	Kozorosa
Chamfer	Bevels edges, along tangent chains or whole loops.	Kozorosa
Flip	Mirrors an object across the screen's horizontal axis.	Kozorosa

Construct

Tool	What it does	Comes with
Tape Measure`T`	Measures between two points and lays guides.	Kozorosa
Dimension	Places a dimension between two points.	Kozorosa
Protractor	Measures angles and lays angled guides.	Kozorosa
Text	Places a text label in the model.	Kozorosa
Axes	Moves the drawing axes to a new origin and directions.	Kozorosa
3D Text	Makes 3D lettering as geometry.	Kozorosa
Section Plane	Places a section plane that cuts the view open.	Kozorosa
Construction Plane	Makes a construction plane at an offset or an angle from a plane or a face.	Kozorosa
Work Point	Makes a work point that follows the corner, edge or face it was made on.	Kozorosa
Work Axis	Makes a work axis from references, with a live preview.	Kozorosa

Camera

Tool	What it does	Comes with
Orbit`O`	Turns the view round the model.	Kozorosa
Pan`H`	Slides the view.	Kozorosa
Zoom`Z`	Zooms the view in and out.	Kozorosa
Zoom Window	Zooms into a window you drag.	Kozorosa
Zoom Extents`Shift+Z`	Frames the whole model.	Kozorosa
Previous View	Goes back to the view before.	Kozorosa
Position Camera	Stands you at a point in the model, at eye height.	Kozorosa
Look Around	Turns your head from where you stand.	Kozorosa
Walk	Walks through the model.	Kozorosa

Booleans

Tool	What it does	Comes with
Outer Shell	Merges solids into their outer skin only.	Kozorosa
Intersect	Keeps the volume two solids share.	Kozorosa
Union	Joins solids into one.	Kozorosa
Subtract	Cuts one solid out of another.	Kozorosa
Trim	Cuts a solid with another and keeps the cutter.	Kozorosa
Split	Splits two solids into all their parts.	Kozorosa

Features

Tool	What it does	Comes with
Shell	Hollows a solid to a wall thickness, leaving chosen faces open.	Kozorosa
Draft	Tilts faces by an angle, for moulding and casting.	Kozorosa
Loft	Makes a solid through two or more profiles in order.	Kozorosa
Thicken	Gives a face a thickness to make a solid.	Kozorosa
Split Body	Cuts a body in two with another body, a face or a plane.	Kozorosa
Split Face	Divides faces along the surface of another face.	Kozorosa
Rectangular Pattern	Repeats bodies in rows and columns.	Kozorosa
Circular Pattern	Repeats bodies round an axis.	Kozorosa
Path Pattern	Repeats bodies along a curve.	Kozorosa
Mirror	Mirrors bodies across a plane or a face.	Kozorosa
Move Face	Moves faces of a solid; the solid follows.	Kozorosa
Offset Face	Offsets faces of a solid by a distance.	Kozorosa
Delete Face	Removes faces; their neighbours grow over the gap.	Kozorosa
Replace Face	Moves flat faces until they reach another face's surface.	Kozorosa

Timber construction Module

Tool	What it does	Comes with
Beam	Draws a beam from the market's catalogue of sections — solid, KVH, Duo/Trio, glulam, LVL.	Timber construction module
Column	Stands a column or post of a catalogue section where you click.	Timber construction module
Rafter	Draws a rafter from its seat to the ridge.	Timber construction module
Panel	Draws a board — OSB, plywood, fibreboard — of any outline, with openings.	Timber construction module
Joint	Cuts a carpenter's joint into two members: tenon, dovetail, lap, birdsmouth and more.	Timber construction module
Join all	Joins every pair of touching members by rule in one step.	Timber construction module
Fasteners	Places screws, nails, bolts or connectors in a joint, at EN 1995 spacings.	Timber construction module
Framed wall	Frames a wall: studs, plates and openings from its base line.	Timber construction module
Roof	Frames a gable or shed roof from its eave line.	Timber construction module
Roof over a plan	Frames a roof over any plan: ridges, hips, valleys and every rafter.	Timber construction module
Truss	Lays out a truss — Fink, Howe, Pratt, king-post and more — from its bearing line.	Timber construction module
Row of trusses	Lays out a row of trusses along an eave line.	Timber construction module
Number parts	Numbers the parts: identical parts get the same production number.	Timber construction module
Part drawings	Makes a production drawing sheet for every part number.	Timber construction module

Timber frame Module

Tool	What it does	Comes with
Frame walls`W`	Draws prefabricated timber-frame walls from a build-up, corners joined, split for the truck.	Timber frame module
Frame floor	Draws a timber-frame floor from its outline and build-up.	Timber frame module
Opening	Cuts a door or window opening into a frame wall.	Timber frame module

CLT Module

Tool	What it does	Comes with
CLT walls	Draws CLT walls from a producer's layups, corners joined.	CLT module
CLT floor	Draws a CLT floor from its outline.	CLT module
Opening	Cuts an opening into a CLT wall.	CLT module

Light-gauge steel framing Module

Tool	What it does	Comes with
Member	Draws a single cold-formed steel member.	Light-gauge steel framing module
Wall panel	Frames a light-gauge steel wall panel from its base line.	Light-gauge steel framing module
Wall chain	Frames a chain of wall panels with their corners resolved.	Light-gauge steel framing module
Truss	Lays out a row of light-gauge steel trusses.	Light-gauge steel framing module
Joists	Lays out a joist floor from its rim track.	Light-gauge steel framing module
Operations	Computes the roll-former's operations at every intersection.	Light-gauge steel framing module
Number	Labels every member as the roll-former prints it.	Light-gauge steel framing module

Roofing Module

Tool	What it does	Comes with
Covering	Lays a covering — tiles, slates, shingles or metal — with its battens on every slope of a timber roof.	Roofing module

Stairs Module

Tool	What it does	Comes with
Stair	Draws a timber stair — straight, with a landing or winders — checked against the building rules.	Stairs module

Structural steel Module

Tool	What it does	Comes with
Beam	Draws a steel beam from the EN, BS or AISC section catalogues.	Structural steel module
Column	Stands a steel column of a catalogue section.	Structural steel module
Brace	Draws a steel brace between two points.	Structural steel module
Plate	Draws a steel plate of any outline.	Structural steel module
Connection	Connects a beam to the member it meets: end plates, fin plates, cleats and more.	Structural steel module
Base plate	Puts a base plate under a column.	Structural steel module
Bolts	Bolts parts together, holes drilled.	Structural steel module
Number parts	Marks the parts: identical parts and assemblies share a mark.	Structural steel module

Beyond the rail

Feature	What it does	Comes with
Drawings	Drawing sheets from the model: projected, section, detail and isometric views, dimensions that follow their edges, PDF, SVG and DXF.	Kozorosa
Simulation	Linear static stress and modal analysis of a solid: fixtures, loads, displacement, stresses and safety factor.	Kozorosa
Machining (CAM)	Three-axis milling: setups, a tool library, facing, contour, pocket, adaptive, drilling and 3D finishing, simulated, posted to G-code.	Kozorosa
Assemblies and motion	Components, seven kinds of joints, gears, belts and cams, motion studies with clashes, video and animated glTF.	Kozorosa
Timeline and history	A parametric timeline of features you can reorder and suppress, configurations, branches with merge, and replay.	Kozorosa
Analysis and measurement	Mass properties, interference and clearance, zebra, curvature and draft, and design requirements checked live.	Kozorosa
Materials, scenes and rendering	Materials with density and real-scale textures, layers, saved scenes, display styles and AI concept renders.	Kozorosa
Import and export	STEP, IGES, BREP, STL, OBJ, 3MF, glTF, Collada and IFC in and out; DXF and SVG into sketches.	Kozorosa
Parts library	Gears, ISO threads, bolts and nuts, washers, springs and flanges placed on a plane or a face; your own plugins too.	Kozorosa
AI assistant	A chat panel on every page: it reads and measures your models and, with your approval, changes them or draws a proposal over the model for you to review.	Kozorosa
AI mode	A workspace for designing by talking: the modelling tools are put away and the assistant builds the model from your description, stage by stage, while you point, orbit and measure.	Kozorosa
Your own AI agent	Connect Claude Code, Claude Desktop, Codex, Cursor, VS Code, Gemini or Windsurf to the model over MCP.	Kozorosa
Python console	Scripts that edit the model, each run one edit and one undo step.	Kozorosa
Collaboration	Live editing together, presence, comments, share links, roles and an audit log, on your own servers.	Foundry