I bought fantastic yarn from Wålstedts that I wanted to test for nalbinding. It is a s-plied, 2-ply, rather thick (Nm 3/2) yarn. I needed a very warm hat so I used the yarn double while making it. The result is dense and almost wind proof. I had decided to let let the structure of the stitches show.
To get a denser result I wrapped the yarn around the needle instead of the thumb. That way I did not need to full it afterwards. The stitch I used is number one in Westman´s book "Nålbindning - 12 varianter"