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1 vote

How is this metal, hollow sphere manufactured?

It looks like you've already received a pretty solid answer on how this specific ball was made (and I agree that it looks like it was welded). For what it's worth, there are a few cases of hollow ...
Jerry Coffin's user avatar
1 vote

How is this metal, hollow sphere manufactured?

On the video on David Harber - mantle at 15 s in you can see this internal shot. It appears to me that 1, 2 and 3 are continuous connections but 4 is overlapped and indicates an extremely neat weld. ...
Transistor's user avatar
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1 vote

Why did the Soviet Alfa-class submarines have a titanium hull?

All Soviet industries were state owned, including titanium production. So Soviet made titanium submarines to showcase their technological might. THough titanium is strong, corrosion resistant and ...
LazyReader's user avatar
0 votes

Why are car bodies not made of titanium?

Price average Titanium alloys costs 70-80 dollars a pound. Steel cost 0.03 dollars a pound. A unibody car chassis suddenly becomes 2000x more expensive for the raw material alone. Workability, ...
LazyReader's user avatar

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