On Wednesday, May 1, 2013 7:27:11 AM UTC-5, Wild_Bill wrote:
Explosive forming.. think auto-safety airbag, except steel.



Let us know where to go to watch the video.



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WB

.........





"flometrix" wrote in

message roups.com...

Hi, this is for a prototype project, it will not be welded.



O.D: 8"

Thickness: .125" nominal or something close

Material: 304/316 stainless

Type: Hemispherical Tank Head

Quantity: 2



Does anyone know where I could get this?



Thank you



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I met someone who claimed to have hollowed out a stump....
Laid the metal over the hollow, added a couple pounds of black powder, and then dumped a couple yards of dirt over the top to give it some back pressure.
Touched it off, and formed a nice tank head.

Of course it was quite a one-up-manship fest at Bonneville.....