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[imperium3]

Right folks, I am building my current fortress as a huge above-ground construction with built-in magma plumbing (and water too). This requires a great deal of planning, since later alterations will be quite difficult and time-consuming. And one of the biggest questions is how many areas need magma...

So far I have a short list of things I might want magma for.

- Room purges, e.g. jail cells or hospital wards with dangerous inmates. Maybe magma from above + floor grates as a drain?
- Obsidian casting, both for the rock and perhaps for defence.
- Magma forges will need a supply.
- Open pools of magma might make a nice decoration, especially for appropriate temples - but this seems very !!FUN!!

Is there anything obvious/creative that I have forgotten about?

[Luriant]

Magma Landmines is a must if you have pressured magma.
http://www.bay12forums.com/smf/index.php?topic=91789.0

Magma railgun, with powered minecarts...

Magma mist trap
http://www.bay12forums.com/smf/index.php?topic=158373.msg7017036

[Dorsidwarf]

If it's a freezing biome, or at least winter frost you can magma-heat the plumbing

[mikekchar]

You can try my dream construction (haven't managed to get around to it): Hot spring.  Tiles over magma are heated to 41C.   Add water.  Entice your dwarfs to relax in the hot water.  Probably need a waterfall to actually get them to have good thoughts about it, though....

[Fleeting Frames]

Magma cleaning
- Around the well, the washed-off contaminants will be erased by it. Sphalerite posted a design once. Alternatively, do this in the entrance.
- Inside the cabinets: They already collect all kinds of magma-unsafe worn clothes. Remove clothes with magma (causes bad thoughts though)
- Inside the workshops: once butcher's workshop gets cluttered from useless stuff like feathers and nervous tissue, rinse it instead of haul it.

Alternatively, use a minecart/diagonal to just dump things in magma. Example from Deathgame

Regarding open pools, you can get same effect if you make the pools, build bridges above, then d-b-h the bridges. Will look like dwarves are walking on magma

- Magma+door: various arrangements that can boil down to "fry whoever opened/destroyed this door".

- Perhaps (decorative) magma misters? Can do this one even with a wooden minecart if you use skipping.

- Creature logic: Lot of things will not path directly into magma. You can use this for "instantly seal path on open signal" to contain them.

- Possibly sapling/camper removal.

[SebasMarolo]

Well, if you have clay or sand, kilns and glass furnaces could be powered with magma.

I mean, free infinite green glass to decorate free infinite clay crafts with is pretty nice. I always wanted to use those industries to give something to do to my haulers, so they can at least accomplish their dreams of creating a great work of art, or create a masterwork, or mastering a skill.

Also, you may want to make a separated forging room for cheap weapon grade metal, in which you can get every dwarf some weapon or armour smithing levels and hope for some cool artifacts.

[Skorpion]

Clearing workshops - Does this destroy the workshop if it's not made from a magma-safe material?
Sapling clearance - Do forest fires still happen? Would it be avoidable by walling off sections of forest?

Magma waste disposal is wonderful, though, especially with minecarts. Haul waste into carts, dump into magma.

[PatrikLundell]

Magma sapling clearance is a major overkill when you can just designate a dirt road over the sapling.

[Fleeting Frames]

Yeah, I'd imagine it'd destroy the magma-unsafe workshop.

A bit more unusual and compact disposal method (can place it right on top stockpile) would be to load a minecart with magma, but only a bit of magma. Like so:

Use "Give to" link to take the completely average and not special at all stones out afterwards

Then you can put things inside minecart to be disposed of:






It's possibly more safe, as I had one dwarf fall asleep right on top of it


But as a downside, it is a looot slower and weaker. In this test, most non-wood things put inside a cart didn't take enough heat to take wear over 2 months. (even if same type of items did get some)

Overall, for most applications would recommend using "dump it into magma" instead.

[rhavviepoodle]

Any time I have a magma tube in one of my caverns, I generally set up a mass pitting room above it. It's sort of the inverse of being able to flood a jail cell, I guess, but it's pretty simple and effective.

[Azereiah]

You can utilize your magma sources to dam rivers and redirect them as necessary.

[hanni79]

Always plan a Magma drainage for your whole plumbing, it will most likely safe the dwarves collective a..es when something goes slightly to medium wrong 

 

[Mr.Elendig]

Melting ice, either for ‼FUN‼, ‼FUN‼ or just to get water.