I made this Lightweave Cloth farming guide to help out players who want to farm the cloths instead of buying them from the Auction House. I decided to search for places with high density of mobs which I can kill and drop [Lightweave Cloth]. I traveled around Argus, and after a while I made a list of places.
Tailors will get 4-5 times as much cloth as non-Tailors, even if their Tailoring skill is 1. Don't expect much cloth if you farm without Tailoring.
Keep in mind! In Legion, several people can tag the same mob and still get loot. So, even if someone is already killing your mob, you can just help him and you can loot it too.
This is hands down the best place to farm, none of the places come even close to it. There are two marked spots, you can farm at both of them, the respawn rate is so fast you don't have to move between them, you can stay at the lower or the upper part.
These mobs hit really hard, I could only pull 3 at a time, but it will depend on your class how many you can handle. Tank spec might be able to pull all of them. A few mobs will instantly respawn when you kill the last one, so you can never run out of mobs to kill.
NOTE: Sometimes there is a rare elite at this spot, which makes it pretty hard to farm here.
A good alternative to the places mentioned above. Mobs will keep respawning, you will never run out of them.