system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] How would you try to destroy the Sword of Gryffindor?

So I'm just wondering if anything can actually harm that stuff. Cause if something doesn't kill it that makes it stronger and it absorbs everything that makes it stronger. So nothing can kill it, am I right?
gpt
If goblins can forge it, goblins can unmake it. No sense in making a weapon you can't counter.

In Merlin's time (or previously) there must have been wizards or witches who understood more about goblin smithing than modern-day practitioners. With a proper application of magic/willpower, it has to be possible to melt it down. Otherwise every Hogwarts student on a minor adventure would be tripping over an indestructible goblin made sword.