Hi,

    after a good fight with Inkscape I could finally get close to what I wanted to achieve, this: (Click in the link)

    I copied a screen, transformed with Gimp and did with Inkscape that thickness effect. It has some little things to improve but I wonder if there already exists a filter or extension that do the same in a very easy way. If not, how should I improve it?

   Thanks in advance.

Hi. Try Extensions/Generate from path/Extrusion