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[Carcanken]

"I must have rock bars!"
Okay, I assumed he meant blocks, so I made afew, nothing happened, so I thought it would be any normal bar, but when I try to make a bar, it says my smelter doesnt have a reaction to do. I have coal I want to be made into coke, but its not working. The coal is also acsessible by the smelter, what can I do?

[katana]

He means metal bars. You need coal or some fuel to make the coal into coke as well :/

[JacaByte]

What I did when I needed to get my metal industry running for the first time was build a temporary wood furnace, burn a log of wood, and use the resulting, sacred bar of coke to smelt bituminous coal into more coke. Voila, my supply of coke was then limited by the number of smelters and furnace operators I had and how much coal I could dig up.

[dwarfhoplite]

i had a dwarf asking for pictures of a forest and then he died to depression

[Uristocrat]

i had a dwarf asking for pictures of a forest and then he died to depression

Should have cut some wood!

[Sutremaine]

Usually it's metal, but I think there have been occasions where it isn't. There's something weird about the inorganic materials in .31. If you look in, say, a weapon stockpile's options and then check out the metal options, there are gems and soils listed there.

It seems like it's the 'bar' part that's important, not the 'rock' part.

And oh yeah, get yourself a wood burner (that's probably the problem, but I don't know what error message the smelter is giving). In future, always keep a chunk of fuel locked away (in case you accidentally unforbid it).

[Fredd]

The evil rock bar is usually either coke, or charcoal. They need it to melt something for an artifact. If you think about it, coke is a bar made from rock, goes with the odd descriptions they mutter. Glass makers are infamous about needing it, for arti's, since sometimes they will only use a normal glass furnace.

[CapnUrist]

The evil rock bar is usually either coke, or charcoal. They need it to melt something for an artifact. If you think about it, coke is a bar made from rock, goes with the odd descriptions they mutter. Glass makers are infamous about needing it, for arti's, since sometimes they will only use a normal glass furnace.

Misconception. "Rock bars" requested by a dwarf in a fey mood can always be fulfilled with metal bars. Glassmakers using a glass furnace for an artifact never use a magma glass furnace, and will never need fuel for it, nor will any artifact require fuel to make.

The "rock bars" request is a result of the way inorganic materials are handled in .31.xx, as it changed from how it was done in 40d, I believe.

And as it was said, coal requires existing fuel to be smelted into more fuel. Only wood furnaces can make fuel (charcoal) without existing fuel, so any fuel production must start with at least one log burned at a wood furnace.

[zephyr_hound]

Re the smelter thing, sometimes the options disappear for some reason. I had "make iron/pig iron/steel bars" all disappear from my options list between one job and the next, and there was free flux, limonite and coke in stockpiles right by the smelters. If you know you have the ore available and there's no option in the smelter, add the smelting job via your job manager instead (j-m) and it'll reappear on the smelter's list for next time.

There's a similar issue with soapmaking, which usually (in my experience) has to have the job added from the manager for the first time, then it shows up as an available task at the soapmaker's workshop after that.