A possible history of Bilbo's Sting via Wikipedia

Here is a possible history of Sting according to wikipedia.  It is assumed that the blade was forged in Gondolin but in The Opal Stone Trilogy: A History of the Origins of The Hobbit Sword, Sting will give a much more detailed account.

Additional information can be found here...The Hobbit Sword History

FROM WIKIPEDIA:

An artifact from J. R. R. Tolkien's fantasy universe of Middle-earth, Sting was an Elvish knife or dagger made in Gondolin in the First Age.

Sting was a magical weapon used by Bilbo Baggins in The Hobbit. Bilbo found it in a troll-hoard along with the swords Glamdring and Orcrist. Sting was likely forged by the elves of Gondolin in the First Age. Although it was only a dagger by the standard of Men or Elves, it made a handy short sword for a hobbit. Bilbo gave Sting to Frodo Baggins before the Fellowship of the Ring set off from Rivendell. When Frodo was betrayed at the pass of Cirith Ungol, Samwise Gamgee took Sting to prevent it from falling into enemy hands, but later returned it to Frodo. Following the end of the War of the Ring, Frodo gave Sting and all of his other possessions to Sam before departing for the Undying Lands.

Bilbo named the blade after fighting giant spiders in Mirkwood. The spiders themselves referred to it as his "sting."

The Hobbit Bilbo's Sting

Sting had the magical ability to detect any nearby orcs. When orcs were present, it glowed blue, as it did when the Fellowship encountered orcs in the mines of Moria. This was a common property of First Age Elf blades, particularly those forged in Gondolin.

Sting was exceptionally sharp. Bilbo managed to thrust it without effort deep into a wooden beam at Rivendell. Frodo also wounded a troll in Moria, after Boromir notched his own sword with his attempt. Sting was useful in Shelob's Lair when it cut though Shelob's webs with ease. Considering that giant spiders were a menace in the mountains south of Gondolin, it makes sense that a weapon of this type would be enchanted/designed to cut their webs. In real Europe, a bilbo blade was an exceptionally fine blade, after the city of Bilboawhere such blades were made. It is possible that Bilbo's name and his acquisition of this sharp blade was connected in the author's mind.

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