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Heavy Furnace
Crafted object

Heavy Furnace

It's more efficient than a regular furnace. Requires 25 pieces of ore and 3 coal per use.

Machines & crafting →

Base sale value

Not verified

A base sale value has not been verified for this item type.

At a glance

Outdoor placement
Allowed
Indoor placement
Allowed

Cooking & crafting

1

Heavy Furnace — crafting

Makes this item

Output
1 × Heavy Furnace
  • An external learning source is required; the complete unlock path is not established here.
  • Equipment: Crafting menu; no workstation specified by this recipe.
  • 2 × Furnace.
More conditions & notes (2)
  • 3 × Iron Bar.
  • 50 × Stone.
Recipe ingredients & learning sources →

Machine processing

8

Heavy Furnace → Copper Bar

Inputs / alternatives
25 × Copper Ore
Output candidates
Copper Bar × 5–6
Processing time
30 in-game minutes
  • The first applicable machine rule wins. One valid output is selected; listed alternatives are not simultaneous yields.
  • Additional consumption: 3 × Coal.

Heavy Furnace → Iron Bar

Inputs / alternatives
25 × Iron Ore
Output candidates
Iron Bar × 5–6
Processing time
120 in-game minutes
  • The first applicable machine rule wins. One valid output is selected; listed alternatives are not simultaneous yields.
  • Additional consumption: 3 × Coal.

Heavy Furnace → Gold Bar

Inputs / alternatives
25 × Gold Ore
Output candidates
Gold Bar × 5–6
Processing time
300 in-game minutes
  • The first applicable machine rule wins. One valid output is selected; listed alternatives are not simultaneous yields.
  • Additional consumption: 3 × Coal.

Heavy Furnace → Iridium Bar

Inputs / alternatives
25 × Iridium Ore
Output candidates
Iridium Bar × 5–6
Processing time
480 in-game minutes
  • The first applicable machine rule wins. One valid output is selected; listed alternatives are not simultaneous yields.
  • Additional consumption: 3 × Coal.

Heavy Furnace → Refined Quartz

Inputs / alternatives
5 × Quartz
Output candidates
Refined Quartz × 5–6
Processing time
90 in-game minutes
  • The first applicable machine rule wins. One valid output is selected; listed alternatives are not simultaneous yields.
  • Additional consumption: 3 × Coal.

Heavy Furnace → Refined Quartz

Inputs / alternatives
5 × Fire Quartz
Output candidates
Refined Quartz × 15–20
Processing time
90 in-game minutes
  • The first applicable machine rule wins. One valid output is selected; listed alternatives are not simultaneous yields.
  • Additional consumption: 3 × Coal.
Show 2 more machine processing entries

Heavy Furnace → Wilted Bouquet

Inputs / alternatives
1 × Bouquet
Output candidates
Wilted Bouquet × 1
Processing time
10 in-game minutes
  • The first applicable machine rule wins. One valid output is selected; listed alternatives are not simultaneous yields.
  • Additional consumption: 3 × Coal.

Heavy Furnace → Radioactive Bar

Inputs / alternatives
25 × Radioactive Ore
Output candidates
Radioactive Bar × 5–6
Processing time
560 in-game minutes
  • The first applicable machine rule wins. One valid output is selected; listed alternatives are not simultaneous yields.
  • Additional consumption: 3 × Coal.

Gifts & recipients

This item type is outside ordinary gift acceptance; no neutral preference is inferred.

Ordinary tastes describe base items. Quality, birthdays and other friendship modifiers are separate; special items use their own handlers. Gift guide →

Vanilla Stardew Valley 1.6.15. Sources describe possible outcomes; save progress and game rules can change availability. Unlisted acquisition methods may exist. Values do not include profit calculations. Gift tastes describe base items; acceptance depends on recipient and save state. Sources, methods & limitations