Smelter



The Smelter is a production building unlocked at experience level 24. Players can have up to five smelters.

It is used to make silver bars, gold bars, platinum bars, iron bars, and refined coal.

Appearance
The Smelter is a brick furnace, with a chimney, an oven and a mold to pour molten metal or coal into. A casket of ore sits next to it.

The mastered version has a golden star on its basket, as well as copper bricks.

Building
It takes 18 hours or 42 to build each smelter and gives players 21  when completed. It costs more and more coins to build them:
 * 12,500 for the 1st one
 * 22,000 for the 2nd one
 * 31,500 for the 3rd one
 * 41,000 for the 4th one
 * 50,500 for the 5th one
 * Each smelter costs 9,500 coins more than the previous one

Upgrading
The Smelter originally has one slot available. Unlocking the second slot costs 6 diamonds. Players can unlock 8 new slots in total, each new one costing 3 more than the previous one. Alternatively, they can spend a total of 132 to completely upgrade their machine.

Mastering
A total of 8,110 hours of production is required to master the Smelter:

Strategy tips

 * Each bar requires 3 units of ore.
 * Producing bars is tied to the Helter Smelter achievement.
 * The Smelter is very hard to master if you do not have five of them.
 * Selling bars is not profitable at all considering the time it takes to make them.