60,000,000+ coins recommended
|7,129,000 per hour|
60,000 x Blue dragon leather (158,640,000)
Blue dragon leather is used to train Crafting, and it is always in high demand. Because blue dragonhide must be tanned into leather before it can be crafted, tanning the hides in bulk can be highly profitable.
Because the price difference between hides and leather can be fairly small, it is important to buy the hides for a low price and sell the leather for a high price; you can lose out on up to 50% of the profit if you are not patient. Test the profit by buying one blue dragonhide and one blue dragon leather. If the difference between the two is less than 200, it may be worth it to switch to green, red, black, or royal dragonhide.
To tan dragon leather with maximum efficiency, deploy a portable crafter near a bank or bank chest (for example, near the bank chest in Castle Wars), make a preset with 28 blue dragonhide, and load it. Then right-click the crafter and choose Tan Leather. Additionally, you can use portable crafters on the one already deployed to increase its duration by five minutes per crafter. It is also possible to avoid the cost of the portable crafters by using those placed by other players. The Minigames and D&Ds forum is a good place to check.
To get the fastest tanning speed you need to make sure to be on the lowest ping world. Method: Zoom in and adjust your camera so the portable crafter and the bank would be next to each other. Now load your bank preset by pressing a key then instead of closing the bank interface, click on the portable. Next: press space and at the same time click on the banker. This way you don't need to wait until the bank or tanning interface opens up and can tan with little to no delay. At it's peak, it is possible to tan over 6,600 hides per portable crafter, or nearly 80,000 per hour. Note that blue dragonhide has a buy limit of 10,000 per 4 hours.
It is strongly recommended to check the live prices on the Grand Exchange before making large investments in any method.
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