Mirror - Duplicate reference
The Mirror - Duplicate tool creates a duplicate T-Spline body mirrored across a plane in Fusion.
Design > Form > Symmetry > Mirror - Duplicate
T-Spline Body
Select the T-Spline body to duplicate.
Mirror Plane
Select the face or plane to mirror around.
Weld
If edges touch, they are welded and symmetry is embedded in the body.
Weld Tolerance
Specify the tolerance value to close gaps between edges.