Paradox is one of the most loved tangles. As long as your eyes can stay focused there is not getting tired of drawing it.
Margaret Bremner shared her explorations of a "crazy" Paradox on her blog HERE.
Of course I had to try it! A few times and then some!
I used a glass dip pen. If you look closely at some of the lines you'll see that they are not as smooth and refined as with a Micron Pen (Sakura). The ink might bleed or make little blobs unexpectedly. But that's okay. Sometimes I like that imperfection.