This guide will show you the materials, quests, and recipes needed to become a Dragonscale Leatherworker in Classic WoW.
Total Materials Required
To complete the quests, you'll need to craft 2x 
Tough Scorpid Breastplate, 2x
Tough Scorpid Gloves, and get 10x 
Worn Dragonscale.
Shopping list:
- 36x
Thick Leather - 40x
Scorpid Scale - 12x
Silken Thread - 10x Worn Dragonscale
Obtaining The Recipes
Pattern: Tough Scorpid Breastplate is dropped by Wastewander Bandit in Tanaris.- Pattern: Tough Scorpid Gloves is dropped by Wastewander Thief, also in Tanaris.
You can buy both recipes from the Auction House if you don't want to farm them.
Dragonscale Leatherworking Trainers
After crafting the four items, find the Dragonscale Leatherworking trainer and complete the Dragonscale Leatherworking quest. To start the quest, you need Leatherworking 225 and level 40.
Alliance
You can find the Alliance Dragonscale Leatherworking trainer 
Peter Galen at the Ruins of Eldarath in Azshara.
/way #1447 37.6 65.4 Peter Galen
Horde
You can find the Horde Dragonscale Leatherworking trainer 
Thorkaf Dragoneye in Badlands.
/way #1418 62.6 57.6 Thorkaf Dragoneye
