Stitching Sheet Bodies

The stitch command stitches together the specified sheet bodies into either a larger sheet body or a solid volume(s). The tolerance value can be used when these sheet bodies don't line up exactly along the edges. This is common for IGES and STEP models. Only manifold stitching is performed, i.e., edges will be shared with no more than two surfaces.

To stitch specified sheet bodies together

  1. On the Command Panel, click on Geometry and then Volume.
  2. Click on the Modify action button.
  3. Select Stitch from the drop-down menu.
  4. Enter in the appropriate values for Volume ID(s). This can also be done using the Pick Widget function.
  5. Enter in the appropriate value for Tolerence Value.
  6. Click Apply.

Stitch {Body|Volume} <id_range> [Tolerance <value>] [No_tighten_gaps]

This command has three stages to it:
  1. Stitch the surfaces together along overlapping edges Normally IGES and some STEP files do not contain topological information that links surfaces together to share bounding curves. Stitching is an operation that builds up this topological information.
  2. Simplify geometry The command replaces splines with analytics where possible.
  3. Tighten up gaps (inaccuracies) between the sheet bodies The command will build the geometry necessary to tighten the gaps in the model.

When the stitch operation completes, a print statement lets the user know if the resulting body is not a closed, solid body.

If the no_tighten_gaps option is included, the third step of the stitching process is excluded. This may be necessary in very large or complex models, where the regular approach fails.