Rust Furnace Smelting Estimator

How to calculate smelting requirements?

Smelting efficiency in Rust is determined by the ratio of ore stacks to fuel burn time. To optimize your output, you must balance the quantity of ore with the number of available slots in your furnace to ensure the fuel lasts just long enough to process every unit.

Time = (Total Ore / Available Slots) * Smelt Rate

Using the Smelting Estimator: an example

Consider a scenario where you have 3,000 Sulfur Ore and a Large Furnace. A Large Furnace provides 15 available slots for ore. By splitting your 3,000 units into 15 even stacks of 200 units, the furnace processes all 15 units simultaneously every cycle.

Step-by-step calculation

1. Divide total ore by 15 available slots
2. Calculate wood consumption (1 unit per 5 seconds)
3. Determine charcoal byproduct (75% of wood consumed)

Frequently Asked Questions

Does splitting stacks help? Yes, it uses more slots to smelt faster. The furnace processes one unit from every stack simultaneously, so more stacks equal more items smelted per tick.

Do Electric Furnaces produce charcoal? No, they only smelt ore. Because they run on electricity rather than burning wood, there is no carbon byproduct generated during the process.

What is the most fuel-efficient furnace? The Large Furnace due to its high slot count. It allows you to process massive amounts of ore using significantly less wood per unit compared to multiple small furnaces.