profile p x 5 y 1 x -4 y 4 x -1 y -5
prism pr p 0 0 1
nexplode pr f
depouille pr pr 0 1 0 pr_4 -5 1 1 0 0 1 0
nexplode pr e 
blend pr pr 0.3 pr_7
profile pp x 4 y -4 ww
plane pl 0 0 0.3 0 0 -1
ttranslate pp 1 5 0.3
featlf pr pp pl 0 0 0.3 0 0 -0.1 1 1
featperform lf result

checkprops result -s 71.1826