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Here's how my model looks like, with all layers turned on. That's why you should use layers.

Now, we will create all marks we will later unroll along with the surfaces. Why ? Because during the unrolling process, the resulting surface could be upside down, rotated, and it's not easy to re-orient it correctly without marks. Furthermore, we have to mark bridle points, pinches positions and D-Ribs positions, etc ... With will use Rhino's ability to unroll lines along with surfaces.

To mark bridle points, just connect every A point to the A points of the adjacent profiles (do the same for B and C points).

Note : To create the bridle points on the tip, I've used the (Curve>Point Object>Divide Curve by>Number of Segments) function.

Do the same with the D-Ribs (upper skin and lower skin), and pinches marks. You should get a lot of colored lines ...

Last stage, I'll draw some small marks to orient the surfaces after surface unrolling. I'll make diagonal lines on lower skin surfaces, to mark a specific corner (here, the trailing edge corner, closest to the center of the foil) As I don't need to be accurate, I'll use a 'near' snap.

Do the same for the upper skin. For D-Ribs, I use the same trick to mark the upper skin corner, closest to the trailing edge. On the next picture, I changed the colors for readability.

Now, let's go to the bridle part.

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