Do I need to have metallurgy to light the ore smelter? wiki says has to be filled with coal. then what? is there a pop up menu ? ( ores and limes are already inside )
No, you do not need Metallurgy to operate a smelter. You only need Metallurgy to construct and repair Ore Smelters, and unlock additional skills and crafts.
To fill the smelter with coal you need to right click the coal on the smelter. You can hold down shift while right-clicking to make the process faster.
To light the Smelter, simply grab a lit torch (or less efficiently, a Tinder Drill or Flint & Steel) and right click the smelter.
Are you sure your torch was lit when you tried to use it? It must have fuel (right click tinder like grass or maple leaves on it) and be lit to work. You might also have been standing in the wrong place. Sometimes if you're at the corner of the smelter's hitbox, you can't light it.
For sure, I still sometimes go to light my torch and forget its lit or sometimes its not lit and I think it is... We need a 6' flame and smoke coming off that thing
I have a question about Clearing accumulation of lower/different purity in an Ore Smelter when preparing to produce Iron/Copper bars with the full purity of different iron or copper ore.
Currently I just run the smelter 1 or more times full (25 ore) of the higher purity ore until I start producing the pure bars, but is there a faster/easier/more efficient way to clear a smelter? In my current situation I have exactly 100 high purity copper ore to make a nice copper pot (I found the boulders but I cannot find the mine). Is my best option to just build a new smelter?
Building a new smelter for the copper ore is not a problem in my case, but I think this is a question that many players may be curious about as they start to discover mines of higher purity.
Production of iron bars is not based on chance, instead there is a counter which, when filled to 100%, will produce a bar. Each Ore in the smelter will produce 2% of a bar on it's own, but the addition of Lime will cause EACH piece of Ore to produce an extra +1%. 25 ore in a smelter will generate 50% of a bar, but 24 ore and 1 lime will generate 72%, a substantial improvement.
Iron = Ore * (2 + Lime). (Expressed as a percentage)
Incomplete bars are carried over to the next smelting. Although a 72% batch won't give you a Bar of Iron, the second time you run the smelter filled that way, you will get one full Bar and 44% left over (72% + 72% = 144%).
The smelter must be filled with 15 charcoal in order to be lit. The smelter will then burn for 40 minutes.
Ore that could not be melted into a bar of iron will be left as Dross, which can be used as building material where one would normally need to use Stone, or as a low-value fertilizer.