Exact curves, not chords
Conics are exact rational Béziers, a 3D curve offset is a true offset curve (r=40 offset by 5 gives exactly r=45), and a sketch arc stays a true circular edge all the way into the surface.
Surface Design
Exact wireframe and surfaces for shapes solids cannot reach
Build class-A-style shapes from exact 3D curves and surfaces: extrudes, revolves, sweeps, fills and multi-section lofts, reworked with split, trim, join, healing and rolling-ball fillets. Curves and surfaces stay mathematically exact; nothing is baked into a tessellated approximation.
- Works on
- Parts
- Toolboxes
- 4
Why it matters
What stands out
Lofts through sections and guides
Multi-Sections Surface lofts through two or more sections picked in the tree or the view, follows one guide or a whole curve network, with drag-reorderable lists and draggable closing points.
Rolling-ball Shape Fillet
A bitangent fillet between two supports where you click the half of each support to keep, with minimum or maximum extremities.
Inputs step aside
When a surface operation consumes other surfaces, the inputs are hidden automatically so only the result is shown — a setting turns this off.
Operations
Everything in Surface Design
The complete inventory, toolbox by toolbox, with the icons exactly as they appear in the application.
Surfaces8
ExtrudeExtrude a profile into a surface
RevolveRevolve a profile into a surface; angles may be negative
SweepSweep a section along a path, with an optional spine
JunctionFill surface bounded by curves, with guides and per-boundary tangency
Multi-Sections SurfaceLoft a smooth surface through 2+ sections, optionally along guide curves
OffsetSurface at a constant distance from another; one or both sides
SpherePrimitive spherical surface about a centre
CylinderPrimitive cylindrical surface about any direction reference
Operations12
Shape FilletRolling-ball fillet between two supports; click the halves to keep
JoinMerge surfaces into one sewn shell or curves into one wire, with checks
SplitCut an element by another and keep the marked side
TrimMutually trim two elements, keeping the marked sides
BoundaryThe boundary curve of a surface
ExtractPull a face or edge out as its own element
NearOf a multi-piece result, the piece nearest a reference
ExtrapolateExtend a surface or curve past its boundary by a length
HealingClose gaps and fix tolerances in a shell
UntrimRestore a trimmed face to its full underlying surface
Invert OrientationReverse an element's orientation
DisassembleBreak a multi-piece element into independent, associative pieces
Transformation8
Translate/RotateTransformed copy of a surface or curve, driven by the manipulator
MirrorReflected copy sewn together with the original
SymmetryReflected copy only
AffinityScale by three independent ratios along an axis system
Axis to AxisMap an element from a source axis system onto a target one
Rectangular Pattern
Circular Pattern
User Pattern
Wireframe16
CombineCombined curve from two curves, normal or along directions
ProjectionProject an element onto a support, normal or along a direction
CircleExact circle or arc in a support plane
ConicExact ellipse, parabola or hyperbola arc through its endpoints
HelixAxis, radius, pitch and height
SpiralPlanar spiral by start/end radius and turns
SplineThrough points, with per-point tangency and tension
PolylineChain through ordered points
SpineCurve perpendicular to a set of planes — a sweep's spine
3D Curve OffsetExact offset of a curve about a reference direction
Parallel CurveCurve offset within its support surface or plane
Smooth CurveTangent-continuous B-spline within a stated tolerance
IntersectionThe curve where two elements cross
CornerFillet arc between two curves in a plane
Connect CurveSmooth curve joining the ends of two curves- Curve from EquationMCP onlyx(t), y(t), z(t) as unit-checked formulas; MCP
curve.from_equation
In use
