Strong smelting urn

A Strong smelting urn can be created at 49 Crafting and is used with the Smithing skill to help with gaining experience. It can be constructed by using 2 soft clay on a pottery wheel to create a strong smelting urn (unf). After firing it in a pottery oven, a fire rune must be used on the urn to enable it to collect 'scraps of metal'. The urn is filled when the player has earned 1,262.5 Smithing xp with the urn in inventory. To fill the urn, players must smelt bars in the furnace. Smithing items from the bar does not fill the urn. Once the strong smelting urn is full, it can be teleported to Ernie for 252.5 Smithing experience.

Using Superheat Item does fill an urn. Smelting Silver bars and Gold bars does not fill the urn. Using the blast furnace does not fill the urn. If smelting two bars at once in the Edgeville furnace, the urn only fills with xp from the first bar that is made. The second does not count.

You may only fill 10 Strong Smelting Urns without teleporting them. If you have 10 total in your bank, inventory, and Beast of Burden combined, then you will not automatically fill up the 11th.