Make a cross section: Cutting plane lines

[wwj]

Use the following:
[1] create a "clipping plane" : Tool tab >> Display >> Add a clipping plane

[2] Use "Make2D" command.
- View: Top
- Projection: CPlane --- select this option to match (x,y) coordinates.
- From input objects
- check "Clipping plane intersections"


Ok.

[wwj]

http://docs.mcneel.com/rhino/5/help/en- ... gplane.htm

[1] create a "clipping plane" : Tool tab >> Display >> Add a clipping plane ==> 3rd and 4th buttons from Left End.
command: ClippingPlane


To enable the plane:
- command: EnableClippingPlane command ==> 3rd button from Left End of "Display" tab.
- select the plane in a target View.

It worked!