#box s 0 0 0 100 100 100
#explode s f
#sewing s s_1 s_3

restore [locate_data_file 7_B2.draw] s
tscale  s 0 0 0 SCALE1
explode s E
mkevol P s
updatevol s_1 0 10*SCALE1 1 20*SCALE1 2 1.e-4
buildevol
explode P Sh
copy P_1 result
  
checkprops result -s 485351