The Shrink Wrap feature approximates the shape of a given part with a single surface in order to obfuscate the actual geometry and design, while keeping the general size and shape of the part. The feature works by taking sample points across the circle and generating a B-Spline surface. The sample points are generated from projections of an ellipsoid, so the feature will not capture internal cavities, and the resulting feature may miss details in certain areas. As the surface is an approximation, some of the part may extend beyond the generated shrink wrap, to account for this, an additional thickness may be added to ensure a maximum possible size.