When you convert a part to precise, ABAQUS/CAE tries to change neighboring entities so that their geometry matches exactly. Converting to a precise representation usually results in precise geometry. However, this operation can be lengthy and increase the complexity of the imported part. As a result, processing of the part is slower.
To convert to precise:
From the main menu bar, select Tools
Repair.
ABAQUS/CAE displays the Geometry Repair Tools dialog box.
Tip:
You can also convert to precise using the 
tool, located with the repair tools in the Part module toolbox. For a diagram of the repair tools in the toolbox, see “An overview of repair techniques,” Section 47.2.
From the dialog box, select Convert to precise and click OK.
From the warning dialog box that appears, click OK.
ABAQUS/CAE tries to convert the part to its precise representation.
If you have finished repairing the part, you should check its validity by clicking mouse button 3 on the part in the Model Tree and selecting Update validity from the menu that appears.
