OK, first one I made around cardboard :) Colorful but ... you know ... this was not what I wanted. However my son decided that is awsom.
Ćwiczenie czyni mistrza. Oto efekt drugiego podejścia. Jest maleńki - średnica 9 cm. Oczywiście ćwiczę dalej :)
Practice makes perfect. Here the effect of the second approach. It's tiny - 9 cm diameter. Of course I practice on :)