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[Urist McLaptop]

Im trying to follow the Dwarf wiki so i can spit out free steel bars from the smelter but its not working...what gives? I still need fuel and reagents.

[Urist McAxedwarf]

You realise that there is no guarantee there will be the things you need on your map yes? Also as far as I know there is no easy cheat to get the materials. Equip your army with copper and pray.

[Quietust]

Which raws did you modify?

If you modified raw/objects/reaction_smelter.txt, those are the "master" raws used when generating new worlds - you need to edit data/save/regionX/raw/objects/reaction_smelter.txt to modify an existing world.

If you modified the region-specific raws, it's possible you edited something incorrectly, in which case you'll need to post the edited raws so we can check if you did it correctly.

[Urist McAxedwarf]

Which raws did you modify?

If you modified raw/objects/reaction_smelter.txt, those are the "master" raws used when generating new worlds - you need to edit data/save/regionX/raw/objects/reaction_smelter.txt to modify an existing world.

If you modified the region-specific raws, it's possible you edited something incorrectly, in which case you'll need to post the edited raws so we can check if you did it correctly.

Oops, didn't realising you were messing around with raws. Now I feel silly

[Urist McLaptop]

okay well i decided to do it with adamantine. I replaced the old raw files for the smelter reaction in the data in the save file in that world with

[REACTION:FREE_ADAMANTINE_WAFERS]
[NAME:create adamantine wafers]
[BUILDING:SMELTER:NONE]
[PRODUCT:100:10:BAR:NO_SUBTYPE:INORGANIC:ADAMANTINE][PRODUCT_DIMENSION:150]
[SKILL:SMELT]

and deleted the old one. But it still says i need adamantine strands

[Geldrin]

No, no no! You misunterstood each other!

You can get extra bars in vanilla when smelting specific items in the smelter, for example, chain leggings or giant axe blades.

Also note that the smelting process will give you fractions of bars. So let's say you have melted an item which material yield is equal to 1.2 bars. This will give you 1 bar of the metal, while the remaining 0.2 will be stored in the smelter where you got the job done. So you need to melt 4 more pieces of this item to get one additional bar. Keep in mind that these values will accumulate and are stored for each smelters, and for each metals.

This will get more complicated when it comes to adamantine, so check the wiki for more information.
And yes, you can change the smelting outcome of each item types, respectively.

By the way, this cheat is a really, really rude thing, which I would never-ever try.

[UnlawfullyDeranged]

And of course I would never, ever make a stack of 500 steel coins, separate them into stacks of 1 at the trading depot (using macros when possible), then smelt them for a 49 bar net gain, especially at a magma smelter where I wouldn't even need fuel.

If you're talking about modding, do you need to specify the reagent as NONE? Don't know a lot about it, but from what I've gleaned from browsing modded raws, it might help. Or you could just have a worthless material as a reagent.

[wierd]

Of course you wouldn't use coins. They take up valuable space, and create useless hauling jobs that gum up production.

You would use bolts instead.

[cue]

It's been a while since I did any modding, but I'm pretty sure you need to use something in your reactions to make them work.

[wierd]

That item does not need to be consumed however. [Any_stone] works (I forget the exact token..), just follow the example of the brewing or lyemaking operations which require barrels/buckets, which are not consumed.  Reaction requires it, but item is not used. Since it is the closest one to the workshop (being inside!), it will not be hauled, and the next production run will start instantly.

[Quietust]

okay well i decided to do it with adamantine. I replaced the old raw files for the smelter reaction in the data in the save file in that world with

[REACTION:FREE_ADAMANTINE_WAFERS]
[NAME:create adamantine wafers]
[BUILDING:SMELTER:NONE]
[PRODUCT:100:10:BAR:NO_SUBTYPE:INORGANIC:ADAMANTINE][PRODUCT_DIMENSION:150]
[SKILL:SMELT]

and deleted the old one. But it still says i need adamantine strands

If you're editing raws for an existing world, you must never add or remove entries, only modify them (and keep the name the same) - change that first line from "[REACTION:FREE_ADAMANTINE_WAFERS]" back to "[REACTION:ADAMANTINE_WAFERS]" and you'll probably find that it starts working.

Also, the rest of you guys have no idea what the original poster was talking about - he was trying to do this, but that only works when generating a new world (and also requires adding [PERMITTED_REACTION:whatever] lines to the MOUNTAIN entity definition).

[Geldrin]

Also, the rest of you guys have no idea what the original poster was talking about - he was trying to do this, [...]
[/quote]

No, the original post was about steel bars only, and UristMcLaptop decided later "to do it with adamantine."
By the way, thanks for the tip!

[Quietust]

Given that he wanted it to "spit out free steel bars" without needing "fuel or reagents", it's pretty clear that he was trying to cheat (as stated in the subject) by modifying an existing reaction to produce them for free, not trying to exploit the bug in the item melting code to produce more metal than was used to create the items being melted.

[Dorsidwarf]

There is no cheating in dwarf fortress, only more inventive ways to kill virtual alcoholic midgets.

[gtaguy]

He was changing the reaction to take to materials, but just make it use 'ANY_STONE'. It clears out shitty stone if you stock it in a linked pile, plus free steel.