Does anyone know if there is an addon to add two edge loops adjacent to an existing edge loop, to make "creases" while using a subsurface modifier? I don't wanna mark sharp edges or mark creases, I want to manually (by this addon) add 2 edge loops close to a selected, exsiting edge loop. Ideally this addon would allow me to choose an offset, and also apply these pair of edge loops to as many edge loops I select. I don't think this exists already in Blender so I'm guessing I need to code that??
Just to make sure I expressed myself correctly, here's what I want to do: