Subsurfing and not-subsurfing in the same object.

Is it possible to subsurf a couple of faces, and then add another face that’s straight. i.e. if you want to model an iPod:

http://www.populationstatistic.com/images/ipod_video.jpg

The right side is flat, and the left side is rounded. How can I do that?

Use edge-loops to control the hardness of the edges of your model.
To answer your question: It is not possible to only partially subsurf a mesh.

you can crease the edges, but you will not get the same affect [the left/right sides will not be straight]

so you’ll need to extrude faces varying distances, depending on the size of “bevel” you want

see attached image… the ugly one is done using creases, the others are done using extrudes… [the one in edit mode is the same as the one on the right]

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I don’t quite understand… :-p I’m quite n00bie at Blender. So Let’s begin simple? Is it possible to make i.e. half a ball, starting from a cube? And is there an other way to make round edges without subsurfing?

half a ball from a cube using subsurf
0) create cube

  1. subdivide once
  2. delete half

modelers that support ngons have bevel or chamfer tools which will create nicely rounded edges without increasing the detail of your entire model [just the edge you messed with]. I don’t have anything other than blender on this machine to demonstrate what that would look like, sorry.

Is it possible to make i.e. half a ball, starting from a cube? And is there an other way to make round edges without subsurfing?

Roughly, yes. On your subsurfed cube, select the edges around the face you want flattened, and hit Shift-E to enter crease mode. Move the mouse upwards (I think) and voila.

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