In a surface-based modeling context, SOLIDWORKS does not offer a solution for “unsewing” surfaces. It is possible to sew multiple surface bodies together to form a single one, but the reverse is not possible directly.

This requires performing several steps using various SOLIDWORKS functions:

  • Duplicate the surfaces you want to "unsew" by selecting them all and using either the "sew" function or the "surface offset" function, setting the offset value to 0 mm.
  • Hide the resulting surface body that overlaps the original body.
  • Delete the duplicate faces on the original body by selecting them all again.
  • Make the created surface body reappear.

The purpose of the utility is to provide the user with an interface that allows them to perform all these functions automatically and transparently.

Attention : when the 3D model evolves, there is no automatic update of the geometries generated by the tool. To update the information, simply relaunch the tool.

The interface offers two " cutting " modes:

As you make selections, the UnsewBody tool shows you the number of bodies created.

You can adjust certain settings.

Naming Solids: A name is automatically assigned to each solid created. These solids are stored in a folder with the same name.