The recipe is a random drop from humanoid mobs in Battle for Azeroth zones. Nylon Thread is sold by your trainer or the tailoring supply vendor near your trainer.

So, check out my Skinning Leveling Guide if you want to level skinning. Daniel Brineweaver is in Boralus at the Tradewinds Market. We can also send your research surveys to targeted groups who fit your specifications with SurveyMonkey Audience.

Interested in conducting research with groups on social or professional networks? If the map were to go east of Westeros, would it circle back to Ulthos, or is there something in between? They practice intensive drills in the forest and on the river, maintaining readiness in case of forest troll or orc attacks in the vicinity.