Used 28g, #500ss mesh, and some cotton. Used my smallest screwdriver to make the nano at 8wraps. Wrapped the mesh around it as tight as I could get it. Folded the legs over and tapped them down. Wrapped a old style coil at 6 wraps on the the outside. Put her in the atty and wrapped cotton around the outside leaving both ends open. It came out to .5. I had to build it to fit the nimbus so it can be bigger on other attys.