One of the best spots for farming Knothide Leather is in Nagrand. To make it clear, we're talking here about the TBC, old Nagrand, not the new, Warlords of Draenor Nagrand. So, here's a short guide for loading up with this type of leather.

Where do you get knothide leather in Wotlk?

The best place for Knothide leather is Nagrand Talbuk Thorngrazer's Cords 52.2,46.5 Now although they drop alot of scraps they are easily killed and there are hundreds in this area and the re-spawn rate is awesome.

Where do you get heavy knothide leather?

This item can be purchased in Shattrath City (2), Silvermoon City (2), and The Exodar (2).