Assembling with Constraints You can assemble components together by creating various types of Constraints.  Constraints can be used to assemble components in a fixed position. Constraints can be created by selecting corresponding pairs of geometry from the component being assembled and an existing component.

1. Click Add component from the feature toolbar.
   • Select PISTON_PIN.PRT and click Open.
2. Select datum plane FRONT from the PISTON and the PISTON_PIN, as shown in the following figure.
   • Notice this has created an Align constraint.

Selecting Datum Planes

3. Click Datum Planes from the main toolbar to disable their display.
4. Select the cylindrical surfaces from the PISTON.PRT and PISTON_PIN.PRT, as shown in the following figure.
   • Notice this has created an Insert Constraint.
   • Click Complete Component  from the dashboard.

Selecting Surfaces