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CAD tip CAD tip # 11769:

Question CAD 
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Q - question

How to convert border lines (rails) to a surface?

A - answer You got a pair of border curves (polyline, spline) defining a shape in 2D or 3D space - e.g. rails, sheetmetal band, paper strip, ribbon - and you want to convert them to a surface in 2D or 3D.

To convert a pair of border lines (approximately parallel) to a surface, you can use two methods:

1. The command RULESURF (ruled surface) - select the first and the second border line, AutoCAD creates a Mesh-type object. Round segments are approximated only.

2. The command SURFPATCH - first you will need to close both curves by drawing and JOINing the end segments. The resulting closed curve can be then used in SurfPatch in the Curve option (not Edge). AutoCAD creates a Surface object, including round segments.

See also Tip 9097

100% *  CAD 
23.1.2018    1767×  
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applies to: AutoCAD ·

See also:
Tip 12239:How to extract isolines from a surface of a 3D object?
Tip 12237:UnfoldRS - unfold 3D surfaces to 2D in AutoCAD.
Tip 11054:Difference volume (3D solid) between two TIN surfaces (sets of coordinates)
Tip 9786:3D osnaps to planes in point clouds.
Tip 9711:3DConstruct - converting a 3D mesh to a frame construct

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