Rhino: How to cut a shape out of a 2d pattern structure

• Based on single closed curves: create “Surface from planar curves” (“PlanarSRF”).
• Join all created surfaces

• Draw cutting object/curve for trimming.
• Trim surfaces with cutting object

• Create curvelines out of surface: duplictae all edges with “DupEdge”
• Use pipe fo convert lines to 3d objects

How to convert pattern into single line structure without double lines:

• Explode all curves
• select duplicate lines “Seldup” and delete