Seeing that Thor was close to death after taking the brunt of the power, Groot decided they could not wait for Eitri to find or create a metal handle; he grasped the red hot pieces of metal with one of his arms and then cut the arm off to serve as the handle, truly finishing Stormbreaker.
hence stormbreaker's handle was never forged properly and groot used his arm to form the handle to save thor as there was no time (or other ways within that time frame before thor actually dies) to reopen the eyeris and reforge another handle.
In the MCU, Stormbreaker's hammer and axe part are made of uru. The handle was made of Groot's hand because they couldn't find the actual handle. This is the one from the MCU: In the comics, Stormbreaker was forged for Beta Rey Bill when he became worthy.
The entire axe was undamaged by the beam from all six Infinity Stones. So the handle was likely enchanted alongside the head of Stormbreaker to be nigh-indestructible as well. After all, like other weapons of Nidavellir, Stormbreaker is a magical weapon.
Meanwhile, MCU Phase 4 saw Stormbreaker being wielded by Thor, Gorr the God Butcher, Love, and anyone else who was strong enough to actually lift and swing it. This is because of the respective origins of both legendary Asgardian weapons.
Thor & Stormbreaker All Funny Moments (HD) | Thor Love and Thunder
Can a Stormbreaker be lifted by anyone?
Unlike Mjølnir, however, the weapon is not enchanted to prevent those deemed "unworthy" from holding it, making anybody with sufficient strength capable of using the weapon.
Stormbreaker has the additional power to summon the Bifröst, allowing Thor to teleport anywhere in the Nine Realms. Screen Rant has identified Stormbreaker as the more powerful of the two, based on this ability, as well as it being a much larger and edged weapon.
He was able to lift Stormbreaker because Stormbreaker is purely about strength. In Infinity War, when Thor was asked by the Guardians of the Galaxy, Peter Quill: Don't you think that we should all have a weapon like that?
I think, quite simply, he underestimated both Stormbreaker and this more godly Thor. He had the power to simply snuff Thor from existence or fire a beam that nothing in the universe could stop. Or anything else he could imagine.
When Groot sacrificed himself to save his friends in Guardians of the Galaxy, pieces of him were left behind. They were no longer a part of Groot. The same is true with his arm, which is now just an axe handle, and thus doesn't disappear from existence when Groot does.
Both Mjolnir and Stormbreaker were crafted by the Dwarves of Nidavellir, but Mjolnir was enchanted by Odin and Stormbreaker channels the power of the Bifrost. While Mjolnir required the user to be worthy, Stormbreaker simply requires someone who isn't a mortal to wield it.
The original handle of Stormbreaker in the Marvel Cinematic Universe (MCU) has a Groot-like design, with the handle appearing as a branch or limb from Groot, the sentient tree.
Storm breaker is meant to be the strongest weapon of Asgard and could even summon bifrost, says Eitri. But there is no enchantment or spell on it like it was on Mjolnir. So one doesn't have to be worthy to weild it, just the strength to lift it. Clearly Thanos is capable of lifting it.
The movie doesn't explain Thor's motivations for giving up Stormbreaker, but it makes sense that Chris Hemsworth simply wanted Love to have a powerful weapon to aid her in battle. It's unlikely that he could give her Mjolnir, considering that so few people in the MCU have been deemed worthy of its power.
Thor had the element of surprise and a weapon capable of overpowering even the Infinity Gauntlet. Stormbreaker powered through the gauntlet's energy beam but left Thanos alive long enough to succeed, making his victory in Avengers: Infinity War all the more devastating.
During a Vudu Viewing Party for Avengers: Infinity War, co-directors Anthony and Joe Russo revealed a key difference between Thor's hammer Mjolnir and his new ax Stormbreaker: the latter doesn't require worthiness. That's why Groot was able to lift the ax, not because he was worthy but because he didn't need to be.
However, if you mean comics Thor, he can destroy planets bare handed. His powers over the storm arent dependent on a hammer. If you mean the MCU, then I would have to say yes. Eitri stated that Stormbreaker was created to surpass every weapon made before it, and Odin stated Mjolnir's power was enough to destroy worlds.
Groot is a Flora colossus from Planet X, the capital of the branch worlds. The Flora colossi are tree-like beings whose language is almost impossible to understand due to the stiffness of their larynxes, causing their speech to sound like they are repeating the phrase "I am Groot".
Without the Infinity Gauntlet, Thanos stands little chance against Prime Odin. Odin is stated to be able to shatter the Earth. And he turned Frigga into stars. He has devastated while worlds, laid waste to kingdoms and destroyed demons and monsters.
Stormbreaker can summon the bifrost and Hela is stronger in Asgard. Thor can teleport her and himself and open her chest killing her, or cut off her limbs ir head. Plus, Stormbreaker is stronger than Mjolnir.
