A monotangle of W2 , a classic official tangle by Maria Thomas, - what a challenge !
And no string was given in this week`s IAST challenge
I started with a really uneven grid and drew W2. I used it as string to add some other tangles within.
And I added a very first small try of "PiB" which was created and published by Hanny Waldburger CZT (here) last week. I like it very much and I am going to draw and practise it soon