>>1013345
here, this might clear things up a bit
>first thing, you can see im using the knife tool
>use it locked to the X axis to cut across the right quadrant on its far right segment
>now i can snap to that point, which will line up nice square corners for when i run the bar through the rings
the other cut is just to show the tool in case you havent seen it before or its not clear what im talking about