The part has two bodies: scoop and handle. You convert
the solid bodies to surface geometries by creating surfaces positioned at the
middle section of each body's geometry. Use the
Offset Surface tool to create mid-surfaces for both handle and
scoop bodies.
You can use the Mid-Surface tool to create mid-surfaces. Suitable face
pairs are offset from each other and belong to the same body. For this
particular model, the Mid-Surface tool fails to generate mid-surfaces
because of certain Fillet features and face pairs that are not offset.