#D1----------------------------------------------
psphere p 20 0 90
box p2 -10 -10 10 20 20 20 
bfuse f p p2
nexplode f e 
blend f f 2 f_10 
# 2 f_4 2 f_10 2 f_14
nexplode f f
depouille result f 0 0 1 f_8 2 0 0 35 0 0 1

set square 4827.83
