CAD tip # 11769:

Question CAD
% platform category

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

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

ACAD

* CAD

23.1.2018 2899×

Comments Tell a friend

Prices - CAD eShop:

AutoCAD

applies to: AutoCAD ·

See also:
Tip 13040:	iLogic - display information about complexity of an Inventor part.
Tip 13006:	Calculated property descriptions (tobogan slide from floor to floor)
Tip 12687:	How to find the intersection curve of two surfaces in Fusion 360?
Tip 12471:	What for is the Bank option of the SWEEP command?
Tip 12454:	How to draw Bezier curves in AutoCAD?

Selected tip: How to create an axis of two curves? (average curve)

Back All CAD Tips

Export XYZ coordinates of DWG objects from AutoCAD LT. « | » Parametric constraints between 3D objects in AutoCAD.

Have we helped you? If you want to support the CAD Forum web service, consider buying one of our CAD applications, or our custom software development offerings, or donating via PayPal (see above). You may also add a link to your web - like this "fan" link:

CAD: OS: Categ:
Text:	FAQ glossary

Featuring:
Extend your AutoCAD LT productivity with our popular add-on
CADstudio LT Extension More info

Please use these tips at your own risk.
Arkance Systems is not responsible for possible problems that may occur as a result of using any of these tips.

CZ \| EN \| DE
Login or
registration
	Visitors: 4383

	CAD Forum - tips, tricks, utilities, help, how-tos and FAQ for AutoCAD, LT, Inventor, Revit, Map, Civil 3D, Fusion 360, 3ds max and other Autodesk software (support by Arkance Systems)	Arkance Systems CZ s.r.o. (CAD Studio) - Autodesk Platinum Partner & Training Center & Consulting Services Partner	CONTACT: webmaster.cz@arkance-systems.com tel. +420 910 970 111
	Copyright © 2023 \| Advertise with us \| Online privacy