bsplinecurve profile 2 3 0 3 1 1 2 3 0 10 -7 5 -10 -10 8 5 10 -10 8 5 0 10 -7 5
mkedge profile profile 
wire profile profile 
mkplane profile profile
bsplinecurve w 2 3 0 3 1 1 2 3 0 0 0 2 100 100 100 1 100 0 0 1 -10 -10 -10 2
mkedge w w
wire w w
pipe result w profile

checkprops result -s 16793.8