Cannot rebuild an extruded solid

Rhino
1

I cannot rebuild an extruded solid, how to add more control point to it?

2

Hello- if you want to add control points to the individual surfaces, in the extrusion direction, you’ll need to explode the object and ChangeDegree in V to some number higher than one, but preferably not higher than five, as a rule, or RebuildUV in V - however if you Join the surfaces back up you will not have access to those control points - probably best to post an example of what you have and a description of what you would like.

-Pascal

3

Thanks for reply, I am learning this https://youtu.be/VHwKJ78iDCo?t=140, when I watching it again, it is rebuilding an opened surface.

4

Hi Pascal, I finally understood what you mean. I am trying to model a watch strap, there is a little bump towards the spring bar side. What I am trying is use control point to pull up the surface, but I feel a little lost.

strap.3dm (508.7 KB)

5

Hello- see if the attached file does you any good.
strap_Maybe.3dm (492.0 KB)

-Pascal

6

Hi Pascal,

Learned Untrim and MatchSrf commands from your file, haven’t thought using those commands before, that makes modeling easier. Many thanks!