Wrap > Remove Webs removes spurious polygons that are generated in open spaces after a volume-wrap.
Webs can be internal or external to the polygon object. For example, wrapping a point set of a hand can produce webs between the fingers. Although you can enable the Auto Web Removal option to delete these webs at wrap time, this automatic operation is often more conservative and may not completely distinguish between polygons that legitimately belong to the model and those that do not.
The controls are:
Minimum Edge Length - sets a criteria for selecting polygons based on the length of the triangle edges. Generally, web triangle edges are much longer than those on the actual model. Therefore, you can set the minimum edge length to an amount that is larger than the edge length of the actual model triangles. As you adjust the amount, webs are selected automatically.
Minimum Angle Deviation - uses mathematical normals that extend from the surface to calculate the angle created between that normal and the triangles. The angles of the model triangles are generally lower than the angles of the web triangles. This allows you to use a minimum angle amount to help distinguish between the webs and the triangles within the model. As you adjust the amount, web triangles are selected automatically.
Only Perform Selection checkbox - causes triangles to be selected, not removed. To actually remove the selected triangles, then use Push Shallow.
It is important to note that these parameters are not independent from one another; rather, they work in conjunction with each other. This means that both parameters need to be adjusted. Some web triangles meet one of the parameters, but not the other. Triangles that do not meet both parameters are not selected.
However, because Remove Webs removes triangles by propagating through the model the same as Push Deep, not all triangles must be selected for the operation to be effective. The operation removes the selected webs and all other similar triangles, stopping at the model surface.