The bare minimum requirements are access to the Abyss and Lunar Isle, as well as a wicked hood. You'll also want all the runecrafting pouches and the demonic skull. Helpful items include the ethereal outfit (infinity preferably, for various RC benefits), a ring of imbuing (for extra runes), the Wilderness sword (any level, for fast Edgeville teleports), a BoB/RC familiar (for extra essence storage), and the Nexus Mod and Pouch Protector relic powers (to get to the center of the Abyss faster and not have to deal with pouch maintenance).
- Before you begin, make sure you charge up your wicked hood with a lot of teleports. You can buy teleport tokens for 1500 Runespan points apiece, or you can be like me and have a bunch saved up because I don't do runecrafting much. You'll be using four or five teleports per run. Also, configure the Mage of Zamorak to teleport you on left click instead of talking to him. Put War's Retreat teleport and your wicked hood/ethereal head on an action bar with keybindings you can hit quickly, and configure the head's default interaction to "previous teleport" instead of "activate." Finally, use the hood to teleport to the astral altar once so it's ready for you to teleport.
- Summon your familiar (if using one), and create a preset with your gear (ethereal outfit, skull, sword, and ring only) and inventory (pouches and essence, essence in your familiar as well). You'll be using this for every run.
- Start in Edgeville and head up to the Abyss. To play it safer, use Anticipation just after you cross the wall to give yourself some stun protection, then surge and dive to get to the mage quickly. If you see a PKer, run back the other way since they'll probably teleblock you.
- If you die, you'll have to get your pouches, sword, ring, and skull back. The mage inside the Abyss will give you your small pouch back for free. Talk to Wizard Korvak in the RC guild to get your medium pouch back, and then trade him to buy a large and huge pouch from him. Massive pouches are bought for Runespan points outside the guild. Mr. Ex is the easiest NPC to buy your sword back from. You'll have to craft or buy another ring of imbuing if you're using those. The skull can be rebought from the Mage of Zamorak and will go to your bank, so it's safe to buy.
- From the Abyss, head to any altar. Doesn't matter which one; nature is closest to where you teleport in if you want the fastest runs, but you may want to stockpile some time runes since they're new.
- Craft your runes, then immediately teleport to War's. Load your preset, then immediately teleport to the astral altar and craft again. The abyss buff lasts for one minute after you first craft runes, so you'll still get extra XP and chances for magical thread every time you craft for that duration. You head to the astral altar because it's on the overworld, saving you a click and a loading screen. You can craft about four or five times in total if you're quick.
- Use your sword to tele to Edgeville, load your preset again, and repeat this process.
On average, I'd get one or two thread per cycle, which is still way faster than normal abyss runecrafting or using the runic attuner. The risk is fairly low, and even if you do get PK'd, it only takes a few minutes to collect your stuff again. Probably going to be a pretty good moneymaker for the time being, as threads have been selling for 3-4m apiece; I imagine it's starting to go down again, but it's still going to be some good money.