Hello, I'm new user with Alphacam and CAD in general.

I want to create an profile cut around my shape, I try to do exactly the same thing as in this video : https://www.youtube.com/watch?v=LdsYN57MtG4

But don't understand why, the profile is straight at each time. If it can helps, Alphacam tell me this sentence after validate the cut shape :
Geometries with tools on centre will be be treated as soft boundaries.

Moreover, I'm not sure to set the material in a right way..