Placement Part	Target Part	Relationships	Primary Solution	Secondary Solution
Planar Face	Planar Face	Mate or Planar Align	Best Solution Based on Face Normal Comparison (see Note)	None, use Flip button or TAB key to apply other relationship
Cylindrical Face	Cylindrical Face	Axial Align	Axial	None
Circular Edge	Circular Edge	Axial Align and Mate or Planar Align	Axial Align and Best Solution Based on Face Normal Comparison	None
Linear Edge	Linear Edge	Axial Align	Closest	Opposite
Keypoint	Keypoint	Connect	Connect	none

Note: To determine if a mate or planar align relationship is applied, the orientation of the two faces is compared, and if the faces are closer to a mate solution, a mate relationship is applied. If the two faces are closer to a planar align solution, a planar align relationship is applied. You can use the Flip button or TAB key to apply the other relationship.

When using the Assemble command to position a part already in an assembly using FlashFit, the Flip option is available when you select circular edges. When placing a new part into an assembly with FlashFit using circular edges, the Flip option is not available. You can edit the relationship later.