I wanted to create an electric fan grill. After making the shape in the screenshot below (circle -> select circumference -> extrude -> scale -> wireframe), I found that my fan has one more concentric circle. I tried to add a loop cut, but it did not work. After several seconds of vain attempt, I realised that the object is not a flat surface and edges, but it is a wireframe. I wonder if there is a way to add a loop cut to a solid object.
I know I can undo the wireframe modifier and add a loop cut and then apply wireframe again, but just in case the solid object is not created by the wireframe modifier.