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 dia to build each smelter and gives players 21 xp when completed. It costs more and more coins to build them:

12,500 coin for the 1st one
22,000 coin for the 2nd one
31,500 coin for the 3rd one
41,000 coin for the 4th one
50,500 coin for the 5th one
Each smelter costs 9,500 coins more than the previous one

Products


Silver bar	Gold bar	Platinum bar
Lvl 24	Lvl 25	Lvl 25
8 h ★★★ 6 h 48 min 9dia	12 h ★★★ 10 h 12 min 11dia	16 h ★★★ 13 h 36 min 12dia
147coin	180coin	205coin
18xp	21xp	24xp

Refined coal	Iron bar
Lvl 33	Lvl 34
6 h ★★★ 5 h 6 min 7dia	7 h ★★★ 5 h 57 min 8dia
108coin	129coin
13xp	15xp

Upgrading

Main article: Production Buildings

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 dia than the previous one. Alternatively, they can spend a total of 132 dia to completely upgrade their machine.

Mastering

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

★ 390 hrs	★★ 1,540 hrs	★★★ 6,180 hrs

+10% coin	+10% xp	15% faster

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.