The T-splines technology was originally released as a plugin for Rhino.

For those of you whove had some experience with surface modelling youll know that this isnt always easy.

Subdivision is a mathematical algorithm applied to a surface mesh to add complexity to a mesh to make it look smoother.

Freeform surface models are edited using direct manipulation.

They are not parametric and there is no History (Apart from the UNDO tool).

Instead of converting to a Brep on command, Inventor constantly calculates the T-splines surface in the background.

This means that the Brep model is instantly available as soon as you leave the Freeform environment.

If your operation will cause the Brep to fail, Inventor will warn you.

T-spline surfaces are simple and intuitive and its really easy to iterate through a number of different options.

T Splines Rhino 6 Trial Design Or

If you are in Industrial Design or Product Design, you are going to find these tools really helpful.

Freeform T-Splines surfaces are not going to help with precisely engineered designs for items such as propellers or mechanical screws.

If you are stuck with SWX, maybe you could try the power surfacing plugin instead.