Off topic, but I really appreciate Structural technology at its finest. I've never seen an up-close examination of the truss work in the classic airships.
The 'flanged' holes are created by dimple dies.
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
____________________
.
.What the headline giveth, the last paragraph taketh away. -- Scott Ott
|