A variant of this exploit that was discovered months ago. I say variant because while two worlds are necessary only one toon is. Take your ore to the portal and log out. Log in on the second world and drop the ore in a chest. Log out and back in on the first world. Travel to wherever you want the ore to be. Log out and back in on the second world. Pick up your ore and log out. Log back in on the first world and you are at the desired location with your ore. Works to extend your inventory also if you delay travelling to your final destination until after you refill your inventory.

Like Draconifors, I have always considered using this exploit cheating and I would not do it. Also like Draconifors, I don't give a rat's rear end what you do. Do it if it suits you.