Add two edge loops aroung selected edge loop (hard surface modeling) 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:
Just use the Bevel operator for this Ctrl+B by default, no addons needed.

You can control how many additional loops are added from the operator options panel F6 by default.