beziercurve b1  8  0 0 1 0 1 2 -2 1 3 -2 -3 4 4 -3 5 4 5 6 -6 5 7 -6 -4 8
translate b1 0 0 -3
copy b1 result
repeat 10 {
    rotate result 0 0 0 0 0 1 30
    copy result .
}
checklength result -l 17.264934514807859