Sub-D Weld Comand

Is there a weld command for Sub-d points ? I was a T-splines user and now as I am having to stay at home I am trying out Sub-d modelling . I did get some very promising surfaces at first and then manged to screw them up ! Is there a tutorial to help .
Thanks
Trevor

Hi Trevor - Crease and RemoveCrease may help.

-Pascal

My Sub-d Bumper.3dm (252.6 KB) Think that I have worked it out !
will there be a weld command ?
Thank you Trevor