Thx for your quick reply Dave. I found an unfolding plugin for paper craft models. I'm looking for a folding plugin to fold the models.

Hi, I'm new here. I like to "fold" a 2d model to a 3d cone. Is there a plugin where I can select the folding lines and the two outer lines which need to be connected so that a cone is created of the 2d model. See picture of the 2d model. Blue lines are the folding lines. The 2 red lines need to be connected.