Hi Michael, thank you for letting me know of ShrinkTrimmedSrf command.

However, I still have struggles to achieve what "Andre Samardac" achieved years ago in this video:

https://www.youtube.com/watch?v=PCAmSO8qW00&list=PLdnZa7Wc7RKAXiXgjW9pm1sdvQmjSPIq4

If you take a look at the attached file you would see that "blend" doesn't work as smoothly as Andre shows and it doesn't work good for the other object. (Select the red edges and operate Blend command) then you would see at the bottom corners there are issues for the Cylindrical shape and for the other object it is more problematic.

Note: I made the Cylinder by creating a circle then rebuilding the circle and Extruding it.

Also I have below Questions:

1- when the smaller surface is selected and I press "Show Pts" and then "Add Pt" could I have control over how many control points would be added? I mean could I determine how many rows and columns of control points would be added?

2- Does rebuild work on control points of a generated surface? ( for example a surface generated by loft command? )

- Psygorn (Drillbit)