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EricBrechner (talk | contribs) →Parallel curves to a curve with a corner: Added subsection on using normal fans to define parallel curves around sharp corners. |
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==Parallel curve to a curve with a corner==
[[File:Parallel curves to a curve with a discontinuous normal.png|thumb|Parallel curves to a curve with a discontinuous normal around a corner]]
When determining the cutting path of part with a sharp corner for [[machining]], you must define the parallel (offset) curve to a given curve that has a discontinous normal at the corner. Even though the given curve is not smooth at the sharp corner, its parallel curve may be smooth with a continuous normal, or it may have may have [[Cusp (singularity)|cusp]]s when the distance from the curve matches the radius of [[curvature]] at the sharp corner.
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