pcylinder s1 5 15 
pcylinder s2 3 15 
trotate s2 0 0 0 1 0 0 90
ttranslate s2 0 7 7
ttranslate s1 s2 5 5 0
bcut s s1 s2
tscale s 0 0 0 SCALE1
nexplode s e
blend result s 0.5*SCALE1 s_1

checkprops result -s 72564.2