Furnace
| Furnace | |
|---|---|
 | |
| Type | Crafted Item |
| Recipe | Clint in cutscene after collecting 1+ Copper Ore |
The Furnace is the machine that turns raw ore into metal bars, and few farms get far without one. Copper, Iron, Gold, Iridium and Radioactive Bars all come out of it, and those bars feed tool upgrades, sprinklers and a long list of other recipes. It also refines Quartz into Refined Quartz. Clint hands over the blueprint very early on, as soon as the farmer finds a first piece of Copper Ore. Every load needs a piece of Coal, so a working Furnace keeps the Mines busy too.
The in-game description reads: Turns ore and coal into metal bars.
Recipe
Clint delivers the plans in person. After the farmer picks up any Copper Ore, he turns up outside the farmhouse the next morning with the blueprint. The ore can come from anywhere, including a rock in the Mines or a purchase from Clint himself.
Building one takes twenty Copper Ore and twenty-five Stone. Both turn up in the first few floors of the Mines. The cost is low, so extra Furnaces are easy to add once mining picks up.
These are the ingredients one batch needs.
| Name | Image | Amount |
|---|---|---|
| Stone | 
|
25 |
| Copper Ore | 
|
20 |
Use
Smelting is simple. Holding a stack of ore and using the Furnace loads five pieces, as long as there is Coal in the inventory. One piece of Coal is used for every batch, whatever the metal.
The better the metal, the longer the wait. A Copper Bar is ready in well under an hour. Iron takes a couple of hours, and Gold takes about five. Iridium needs most of a working day. Loading the slow metals before bed means the bars are waiting in the morning.
A single piece of Quartz and one Coal make Refined Quartz in about an hour and a half. Refined Quartz goes into Quality Sprinklers, Lightning Rods and several other recipes.
Coal comes from breaking rocks in the Mines and from Dust Sprites, which drop it often. Clint sells it at the Blacksmith, and a Charcoal Kiln burns Wood into Coal on the farm.
Uses
Crafting Furnace with the other materials below makes these items.
| Item | Image | Ingredients |
|---|---|---|
| Heavy Furnace | 
|
Furnace (2), Iron Bar (3), Stone (50) |
Notes
Bars are the backbone of tool upgrades at the Blacksmith. Each tool upgrade there asks for five bars, from Copper Bars for the first step to Iridium Bars for the last. The Furnace therefore sets the pace of every upgrade.
Smelting adds a little value for selling too. Five Iron Ore and a piece of Coal are worth less together than the Iron Bar they make. The gain is small, and the bars are often worth more as crafting material.
Two Furnaces go into the recipe for the Heavy Furnace, the late-game upgrade from Mining Mastery. It takes much bigger loads and gives a few extra bars from the same ore.
All Crafting
Every entry in this group, with its key details.
