Decurve
The Decurve 
tool replaces a spline with a polyline
made of straight line segments that approximate the original curve. Use it when a
spline must be converted into simple geometry — for example because the target file
format or machine does not support splines.
Decurving a spline
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Enter the Pitch in the input bar. The pitch is the step length used to approximate the curve: a smaller pitch produces more, shorter segments that follow the spline more closely.
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Select the Decurve tool.
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Click the spline you want to convert. Hold Ctrl and click anywhere to decurve all splines in the drawing at once.
The spline is replaced by a polyline on the same layer. If the approximated polyline starts and ends at the same point, it is closed automatically.
| The pitch is limited to the range 0.1–2.0 units. |