Tutorial - Loft with guide curves

Tutorial
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Step 1:
If I have a part made by using a loft feature and I have two guide curves presented on the picture
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Step 2:
The part on the picture is created with the simple loft without using the guide curves. Now i want to use this two guide curves and I edit this loft.
I expand the guide curve section -
Step 3:
I am only going to select one guide curve and under the options for the guide curves I will select to next sharp. In the preview I can see that only one edge is being effected with this selection.
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Step 4:
If instead of this option I chose global,
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Step 5:
In the preview I can see that the whole part is being effected with this selection/
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Step 6:
Than I select the second guide curve and because the option is set to global the whole part is effected by it.
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Step 7:
We can again change the selection and pick to next sharp
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Step 8:
In the preview we can see that only two edges are effected by this option
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Step 9:
Click OK and you have your part.