Speculation

The Necromancer / Sauron

If we presume "Morgul" as the term used to be linked with Minas Morgul, which thus implies a domain  / stronghold of Sauron, then we can look to early drafts of The Fellowship of the Ring:

Gandalf calls the weapon that was used 'a deadly blade, the knife of the Necromancer which remains in the wound', not a 'Morgul-knife'

-p.211

In a later draft:

The 'Morgul-knife' is still the 'knife of the Necromancer'

p.363

Thus - we can see that originally, Tolkien was associating the one named weapon in the text very directly with Sauron. He later changed it of course to 'Morgul-knife' but again, given the association of Minas Morgul and Sauron, it isn't unreasonable to presume then that Sauron or someone quite close to him constructed their weapons.

Source: The Return of the Shadow: The History of the Lord of the Rings, Pt1 - Christopher Tolkien

Speculation

The Necromancer / Sauron

If we presume "Morgul" as the term used to be linked with Minas Morgul, which thus implies a domain/stronghold of Sauron, then we can look to early drafts of The Fellowship of the Ring:

Gandalf calls the weapon that was used 'a deadly blade, the knife of the Necromancer which remains in the wound', not a 'Morgul-knife'

_{The Return of the Shadow: The History of the Lord of the Rings, Pt1, Christopher Tolkien - p.211}

In a later draft:

The 'Morgul-knife' is still the 'knife of the Necromancer'

_{The Return of the Shadow: The History of the Lord of the Rings, Pt1, Christopher Tolkien - p.363}

Thus - we can see that originally, Tolkien was associating the one named weapon in the text very directly with Sauron. He later changed it of course to 'Morgul-knife' but again, given the association of Minas Morgul and Sauron, it isn't unreasonable to presume then that Sauron or someone quite close to him constructed their weapons.

###Speculation

#The Necromancer / Sauron

If we presume "Morgul" as the term used to be linked with Minas Morgul, which thus implies a domain / stronghold of Sauron, then we can look to early drafts of The Fellowship of the Ring:

Gandalf calls the weapon that was used 'a deadly blade, the knife of the Necromancer which remains in the wound', not a 'Morgul-knife'

-p.211

In a later draft:

The 'Morgul-knife' is still the 'knife of the Necromancer'

p.363

Thus - we can see that originally, Tolkien was associating the one named weapon in the text very directly with Sauron. He later changed it of course to 'Morgul-knife' but again, given the association of Minas Morgul and Sauron, it isn't unreasonable to presume then that Sauron or someone quite close to him constructed their weapons.

Source: The Return of the Shadow: The History of the Lord of the Rings, Pt1 - Christopher Tolkien

Speculation

The Necromancer / Sauron

If we presume "Morgul" as the term used to be linked with Minas Morgul, which thus implies a domain / stronghold of Sauron, then we can look to early drafts of The Fellowship of the Ring:

Gandalf calls the weapon that was used 'a deadly blade, the knife of the Necromancer which remains in the wound', not a 'Morgul-knife'

-p.211

In a later draft:

The 'Morgul-knife' is still the 'knife of the Necromancer'

p.363

Thus - we can see that originally, Tolkien was associating the one named weapon in the text very directly with Sauron. He later changed it of course to 'Morgul-knife' but again, given the association of Minas Morgul and Sauron, it isn't unreasonable to presume then that Sauron or someone quite close to him constructed their weapons.

Source: The Return of the Shadow: The History of the Lord of the Rings, Pt1 - Christopher Tolkien