In normal use, picture hanging cables and cords do not mark walls. Stainless steel cable and nylon cord hang vertically and have little to no contact with the paint surface. Most marks people notice come from the back of the frame rubbing the wall, not from the cable or cord itself.
Why marks ...
In most rooms, center pictures with the furniture, not the wall. Furniture anchors the visual field, so aligning art to the sofa, console, bed, or dining table creates a balanced, intentional look. Centering on the wall while ignoring furniture often makes art feel off to one side or ...
