When using Automatic Draft, ensure the following:
- You cannot select a neutral element that is not intersecting the
face you want to draft.
-
You should provide a parting element large enough
to intersect the whole draft skin. Particularly, when material
is added the parting element cannot be a set of faces from the body
to draft because it is not large enough.
-
The parting element should also be a convex and
finite skin. This skin should be orientable.
-
The parting element is mandatory if the remove
material mode is chosen. It is often needed for add material mode it
can however be omitted if all the faces from the input body that cross
the parting are functional faces, like for example in this case (the
functional faces are the pink faces):