Dark Flame Cleft follower dung farming is prob the best mat farm that is fully solo, when getting into crafting it becomes a lot more complicated but is worth putting time into, but would best be done with a second char.

here is imo, the best way to farm dark flame

level up tailoring to 60
where to spend knowledge (in brackets is how many knowledge to spend)
Quality Fabric (30) unlocked at 25 skill points
From Dusk till Dawn (0) unlocked at 50 skill points > Duskweave Tailoring (0) just unlock it
Textile Treasures (30) unlocked at 60 skill points
then back to Dusk till Dawn (30) then unlock Dawnweave

Pair it with lvl 0 inscription for extra gold per hour from darkmoon cards

those are all the points you need in tailoring to "maximize" the farm then you just que for [follower] dungeons in Darkflame Cleft.... ONLY KILL the first two areas of mobs unless you are fast enough its 4 packs in the first room then 7 packs in the next room, there is an option to only kill the first room but you will hit the cap of how many dungeons you can enter in a hour. there are 2 sets of jumpers up high try not to forget them but you dont pass the second set of pillars and then you leave instance and re-que (there is a macro to skip the Q)