#old revolrib10
pcylinder c1 3 5
profile w c 1 190 WW
trotate w 0 0 0 1 0 0 90
ttranslate w -3 0 1
trotate w -3 0 1.5 0 0 1 180
plane pl -3 0 1.5 0 1 0

featrf c1 w pl 0 0 0 0 0 1 0.3 0.3 1 1
featperform rf result

checkprops result -s 154.636