Precheck Tool Options

The following options are available:

Convert to selection The Convert to selection option converts the highlighted objects to the current selection.
Coincidence tolerance The Coincidence tolerance sets the threshold for checking the topology and finding problematic geometry. The purpose of coincidence tolerance in precheck tool is to validate its value that is automatically predicted by software. If it collapses model features (face/edges) unnecessarily, you should opt for lower tolerance.
  • Short edges
  • Slivers
  • Duplicate edges
  • Duplicate faces
  • Self-intersections
  • Misalignments

Select the type of topology you would like to find. Short edges, slivers, duplicate edges, and duplicate faces are selected by default. You can also select self-intersections and misalignments, however, they can take longer to find.

Short edges refer to edges that have very small lengths compared to the overall size of the model. All edges that are less than coincidence tolerance get collapsed automatically by the Share tool (up to a limit of 1e-5m). While using higher tolerances, you should use this tool to do pre cleanup.

Slivers are thin, elongated elements that have a much higher aspect ratio (length-to-width ratio) than desired. All sliver faces with width less than coincidence tolerance should be cleaned up using the Small faces tool.

Duplicate edges are redundant geometric features that have the same geometric location in the model. All edges of a body that are coincident with in coincident tolerance should be cleaned up if they exist in the model.

Duplicate faces are identical surface elements that occupy the same physical space. All faces of a body that are coincident with in coincident tolerance should be cleaned up if they exist in the model.

Self-intersections occur when a part of the model intersects with itself. All self-intersecting entities are highlighted and should be cleaned up using Check geometry repair.

Misalignments refer to geometric features that do not align properly, such as mismatched nodes or vertices along shared edges. All alignment issues in the model should resolved by repositioning bodies to match accurately and have better Share Topology.