I've got 2 38-point splines, both constructed the same way (from the tail, over the top through the nose and back to the tail), each with the same number of points above and below the chord line.
Fusion360 is selecting a "weird" place to commence the loft.
Any idea how to correct that?
Example here: https://a360.co/3bC4l5d
@OceanHydroAU The model shows surface imperfections (highlighted in red), to improve the surface quality, you should try to minimise the amount of control points in the splines.
You probably only require two or three points in a 'fit point spline' and four in a 'control point spline' for further reference see: Control Point Splines: Create complex Sketch curves with precision and ease.
Adding a rail is certainly going to result in predictable behaviour, but it isn't strictly needed in this case 😉
The loft algorithm has to map the 38 points from one spline to the 38 points in the other spline. Visually this can be seen in the viewport during the lofting process. You just need to drag the mapping handle to the correct point.
