http://designreform.net/2010/01/rhino-grasshopper-create-tool-paths-for-cnc-routing/
” In this Grasshopper video tutorial we will be creating different patterns of Iso-curves that have the potential to be used as toolpaths for CNC milling machines. In this first version of the exercise we’ll create a “parallel cut” pattern on the surface by extracting parameters incrementally along one edge. We will then modify the “parallel cut” pattern to be affected as the surface climbs / descends in the Z value. This video encourages designers and students to design not only the parts, but also the fabrication techniques. ”
Topics Covered:
- Extracting BREP Wireframe / Edge Curves
- Dividing Curves
- Finding the Closest Point on a surface
- Evaluating a surface at a parameter
- Creating / Translating Iso-Curves