#K1----------------------------------------------
beziercurve cb 4  10 0 0  20 10 0  20 20 0  10 30 0 
polyline pl 10 30 0  10 0 0
mkedge ed cb
wire ww ed pl
mkplane ww ww
revol rv ww 0 0 0 0 1 0 -180
box bx -5 10 12 10 10 15
bfuse f rv bx
nexplode f f
depouille result f 0 0 1 f_3 2 0 0 25 0 0 1

checkprops result -s 3257.56