00:00What happens when a 300-tonal hydrogen from a hydrogen throne always returns to its original form?
00:05Who's going to win?
00:06The part of this hydrogen of a 10 tonal hydrogen.
00:09Its hydrogen can generate a force of 300 tons.
00:12It is capable of cutting entire cars into compact blocks of scrap metal,
00:16while a large steel beam, designed to withstand enormous loads, is displaced in 30 seconds.
00:21It can even compress 6 steel frames, until it is reduced to 50 cm.
00:25But standing against it is a master spring maker, who claims that his creations are among the strongest in the
00:30world.
00:30He also manufactured the massive springs, installed near the top of the Tokyo Skytree,
00:34where they help stabilize the tower's antenna against strong winds and vibrations.
00:38But just how strong are his springs really?
00:40An ordinary spring would be easily crushed under the force of an excavator.
00:44But this custom-made spring is different.
00:45Even under extreme pressure, once the force is removed,
00:48it returns to its original shape without suffering any permanent deformation.
00:51To challenge the 300 ton hydraulic press, the craftsman builds an even larger spring.
00:56Weighing 500 kg, this enormous spring is made from a special spring steel.
01:00The workers heat the metal, coil it into the shape of a spring,
01:03and subject it to a heat treatment in a furnace at 900 degrees Celsius before the final cooling process.
01:08Thanks to the craftsman's expertise, the ultimate spring is ready.
01:12Before the final showdown, its strength is put to the test.
01:15Two bulldozers push the spring from both sides with tremendous force,
01:18but when they stop applying pressure, the spring quickly returns to its original shape.
01:22Now, the real showdown can begin.
01:24The rules are simple.
01:25If the spring breaks, it becomes permanently bent, or ends up even one millimeter shorter,
01:29The hydraulic press wins.
01:31But if it returns to its original height, the victory goes to the spring.
01:34When the craftsman arrives with the enormous spring,
01:36the hydraulic press operator cannot hide his surprise.
01:39Is that really spring?
01:40Before they begin, professional surveyors take precise measurements of the spring.
01:44Its height is 98.5 centimeters.
01:46Now the ultimate test begins.
01:48The hydraulic press moves forward slowly.
01:50As soon as it makes contact, a force of 300 tons begins compressing the spring.
01:54But even under this incredible pressure, it refuses to lose its shape.
01:57The hydraulic press continues applying pressure, but not even at full power can overcome it.
02:02Then, suddenly, smoke starts coming out of the machine.
02:05Has the spring finally been defeated?
02:06Convinced that he has won, the operator retracts the press.
02:09Little by little, the spring returns to its original shape,
02:12but everything depends on one final measurement.
02:14If it has become even one millimeter shorter, the hydraulic press wins.
02:18The spring is measured one last time.
02:20The result, 98.5 centimeters.
02:22Exactly the same as before.
02:24The spring wins this ultimate showdown.