[1.7.10] UV map proportions are really weird

[Silly511]

When I unwrap a model I made in blender, I join all objects into one, then mark seams, then UV unwrap. But the UV map proportions are really weird. Like a simple cube could be stretched really thin, or a circle could be compressed in a oval. What am I doing wrong?

[Silly511]

Bump.

[Draco18s]

This really isn't a Forge question, but a Blender question.

 

But it all has to do with the initial approximation.  If you start with a bad approximation, then some of the faces will end up skewed or squashed.

[Swingdude]

Are they on top of each other? If so, you need to select all and unwrap.

If you marked a seam by accident, make sure you remove it.

Maybe upload a picture to imgur and post it here.