azimuth 45
twist -20
p -2 1
p 2 1
p 2 -1
p -2 -1
v 5.8 20.8 -15.6
v 6 -5.4 12.6 -80
v -11.2 17.6 13.2
v -18.6 -4.2 0.2 -80
v -17.8 19 -8.6
v 2.2 -5.2 -9.8 -80
v 1.4 18.4 -16.6 -80
v 17 17.6 6.66134e-016
v 7 11 2.2 -80
v -11.2 14.6 3.2 -80