Edit surfaces
Edit surfaces with control points and by changing the surface structure.
Turn surface control points on
![](../image/command_icons/pointson.png)
PointsOn
Display curve and surface control points.
Insert or remove control points
![](../image/command_icons/insertcontrolpoint.png)
InsertControlPoint
Add control points to a curve or a row of control points to a surface.
![](../image/command_icons/insertknot.png)
InsertKnot
Add knots to curves or surfaces.
Change control point structure
![](../image/command_icons/changedegree.png)
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.
![](../image/command_icons/_no_toolbar_button.png)
CreaseSplitting
Control whether surface creation commands divide creased surfaces into polysurfaces.
![](../image/command_icons/fitsrf.png)
FitSrf
Reduce the number of surface control points.
![](../image/command_icons/makenonperiodic.png)
MakeNonPeriodic
Insert a kink at the start/end of a curve or surface.
![](../image/command_icons/makeperiodic.png)
MakePeriodic
Remove the kink from the start/end of a curve or surface.
![](../image/command_icons/rebuild.png)
Rebuild
Reconstruct curves, surfaces, and extrusion objects to a specified degree and control point number.
![](../image/command_icons/rebuildedges.png)
RebuildEdges
Restore surface edges to their surface.
![](../image/command_icons/rebuilduv.png)
RebuildUV
Reconstructs selected surfaces to degree 3, with a specified control point number, in either the u or v direction.
![](../image/command_icons/shrinktrimmedsrf.png)
ShrinkTrimmedSrf
Contract the underlying untrimmed surface close to trimming boundaries.
![](../image/command_icons/shrinktrimmedsrftoedge_rt.png)
ShrinkTrimmedSrfToEdge
Contract the underlying untrimmed surface as close as possible to the trimming boundaries.
![](../image/command_icons/smooth.png)
Smooth
Average the positions of curve and surface control points and mesh vertices and evens out the spacing to remove unwanted detail and loops.
![](../image/command_icons/srfseam.png)
SrfSeam
Change the location where the start and end edges meet on a closed surface.
![](../image/command_icons/weight.png)
Weight
Edit the weight of a curve or surface control point.
Change the surface
![](../image/command_icons/endbulge.png)
EndBulge
Adjust the shape of a curve at its end or a surface near an untrimmed edge.
![](../image/command_icons/flattensrf_rt.png)
FlattenSrf
Project surface edges onto the construction plane to create planar curves.
![](../image/command_icons/softeditsrf_rt.png)
SoftEditSrf
Move the surrounding surface area smoothly relative to the distance.
![](../image/command_icons/smash.png)
Smash
Flatten a surface without restriction to single-directional curvature.
![](../image/command_icons/join.png)
Join
Connect curves, surface edges, or surfaces to form a single object.
![](../image/command_icons/joinedge.png)
JoinEdge
Join two naked edges that are out of tolerance.
![](../image/command_icons/matchsrf.png)
MatchSrf
Adjust a surface edge to have continuity with another surface edge.
![](../image/command_icons/mergealledges_rt.png)
MergeAllEdges
Merge all possible edges of a surface or polysurface.
![](../image/command_icons/mergeedge.png)
MergeEdge
Combine adjacent edges of the same surface.
![](../image/command_icons/mergesrf.png)
MergeSrf
Combine two surfaces at untrimmed edges.
See also
Fillet, blend, or chamfer between curves and surfaces