# Surface Tools toolbar

##### BlendSrf

Create a blend surface between two surfaces with continuity control.

##### ChamferSrf

Create a ruled surface between two surface edges.

##### ChangeDegree

Change the degree of the polynomial that defines the curve or surface by adding or subtracting control points between knot spans, while maintaining the knot structure.

##### ConnectSrf

Extend surface edges to meet and trims the surfaces to each other.

##### CurvatureAnalysis

Evaluate surface curvature using false-color analysis.

##### CurvatureAnalysisOff

Turn off curvature analysis display.

##### CurvatureGraph

Evaluate curve or surface curvature with a graph.

##### CurvatureGraphOff

Turn off curvature graph display.

##### Dir

Display and edit an object's normal direction.

##### Flip

Reverse the normal direction of a curve, surface, or mesh.

##### DivideAlongCreases

Divide a surface into separate parts at kinks.

##### DivideAlongCreases, split at tangents

Divide a surface into separate parts at creases and tangents.

##### EndBulge

Adjust the shape of a curve at its end or a surface near an untrimmed edge.

##### ExtendSrf

Lengthen a surface by a value.

##### FilletSrf

Create a constant-radius round surface between two surfaces.

##### FitSrf

Reduce the number of surface control points.

##### Flip

Reverse the normal direction of a curve, surface, or mesh.

##### MakePeriodic

Remove the kink from the start/end of a curve or surface.

##### MakeNonPeriodic

Insert a kink at the start/end of a curve or surface.

##### MakeUniform

Make the object knot vectors uniform without changing the control point locations.

##### MakeUniformUV

Make the surface knots uniform in u or v direction.

##### MatchSrf

Adjust a surface edge to have continuity with another surface edge.

##### MatchSrf, Multiple Matches

Allows selection of more than one edge to match.

##### MergeSrf

Combine two surfaces at untrimmed edges.

##### OffsetSrf

Copy a surface parallel to the original.

##### PointsOn

Display curve and surface control points.

##### PointsOff

Turn off control, edit, and solid points display.

##### Rebuild

Reconstruct curves, surfaces, and extrusion objects to a specified degree and control point number.

##### RebuildEdges

Restore surface edges to their surface.

##### RebuildUV

Reconstruct surfaces to a specified control point number in the u or v directions.

##### ReplaceEdge

Untrim selected surface edges and retrim the edges.

##### RemoveMultiKnot

Remove multiple knots from curves and surfaces.

##### SetSurfaceTangent

Set the tangent direction of an untrimmed surface.

##### ShowDir

Open the Direction Analysis control and turn on direction analysis for curves, surfaces, and polysurfaces.

##### ShowDirOff

Close the Direction Analysis control, and turn off direction analysis.

##### ShowEdges

Highlight edges of surfaces and polysurfaces. Displays the Edge Analysis control.

##### ShowEdgesOff

Turn off edge display.

##### ShrinkTrimmedSrf

Contract the underlying untrimmed surface close to trimming boundaries.

##### ShrinkTrimmedSrfToEdge

Contract the underlying untrimmed surface as close as possible to the trimming boundaries.

##### Smash

Flatten a surface without restriction to single-directional curvature.

##### SplitEdge

Divide a surface edge.

##### MergeEdge

Combine adjacent edges of the same surface.

##### SrfSeam

Change the location where the start and end edges meet on a closed surface.

##### Symmetry

Mirror a copy of a curve or surface with continuity.

##### TweenSurfaces

Create intermediate surfaces between two input surfaces.

##### UnrollSrf

Flatten (develop) a surface or polysurface with curvature in one direction to a planar surface.

##### FlattenSrf

Project surface edges onto the construction plane to create planar curves.

##### Untrim

Remove trim curves from trimmed surfaces.

##### UnTrim, KeepTrimObjects

Remove trim curves and joined surfaces keeping the trimmed objects.

##### VariableChamferSrf

Create a chamfer surface between surface edges with varying distance values.

##### VariableFilletSrf

Create a round tangent surface between two surface edges with varying radius values.

##### VariableBlendSrf

Create a blend surface between surface edges with varying radius values.

##### VariableOffsetSrf

Copy a surface specified varying distances from the original surface.

Rhinoceros 6 © 2010-2020 Robert McNeel & Associates. 22-May-2020