How do I create a sketch from the free edges of a surface?

[Joshua.mursic]

Hello everyone,

I am trying to create a 3D sketch profile using the free edges of a surface. I saw in the documentation there is a 

createBrepEdgeProfile, but I could not seem to figure out how I am supposed to get it to create a sketch profile. Here is what I have so far, but I am not sure what to give "createBrepEdgeProfile" to make it work.

import adsk.core, adsk.fusion

def run(context):
    app = adsk.core.Application.get()
    ui  = app.userInterface
    product = app.activeProduct
    design = adsk.fusion.Design.cast(product)
    edges = adsk.fusion.BRepEdges.cast(product)

    component = design.allComponents.item(0)
    occurrence = component.occurrences.item(0)
    bBodies = occurrence.bRepBodies.item(0)
    edges = bBodies.edges
    
    component.createBRepEdgeProfile(edges)

[BrianEkins]

What is it that you're trying to do that you need the profile?

[Joshua.mursic]

I have a very irregularly shaped surface and I would like to extend the free edges down so that they are all even and then create a flat surface on the bottom. I have tried the ruled offset, but the edges are not very clean and Fusion was giving errors when I tried to extend them. So I would like to get the free edges as a sketch and then project them onto a flat plane, and then use the surface loft function to bridge the 2 sketches.