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[Swonnrr]

English is not my native language. Forgive me if your !!eyes!! start bleeding. In the name of Dwarven progress, you are free to grammar police me. Also i suck at writing. So forgive the xXxPostxXx

Okay, so some preliminary results.

First, it took me 4 years, doing only that. On Masterwork DF i must say, wich makes digging a lot harder, but still.
Also, i was on an island with basically limitless everything.
On a "standard" embark, with kobold, ambush, FB and stuffs, but with migrants on and a good coffin industry, i guess it still takes years at least.
So i don't see it as a lolembark, but as a true megaproject, wich should come after a temporary semi-above-ground fort has  been build and secured.

Second, it is doable, i partially made it.
Securing a single floor was easy, i just had to flood the volcano with water, then channel/dig it.
Securing a second floor required to cast a first floor, then channel it, then cast again.
The problem is  that it soon turn to a fire vs water war, as magma replenish faster than water flood the volcano, wich leads to the formation of obsidian walls, wich must be taken down by commando miners. As you imagine, the loss rate is high...

It's tedious and painful. A work-around would be to wall sectors, channel, then cast it zone by zone. Wich would require a team of carpenters to redirect the flux of water.
Alternatively, a shitload of pumps on one side, and a shitload of pumps the other side. But then you have the problem of a building a 3x3 pumpstack 30-60 zlvel high... And that's if you have an ocean/river/water in the first caverns.

Third.
I forget what i wanted to say. It may or may not come back to me later.

So i'm skipping to Plan B.
As suggested in this post, i will dig a hole in the cavern and let the Volcano leak by the bottom.
I hope that:
-It will leak fast enough
-I won't kill everyone. Wich the probability are quite high.
Since i broke this volcano and am lazy, i will thrash this save and restart on a vanilla DF.
***

Swonnr withdraw from society...
Swonnr sketches pictures of a Volcano.

Swonnr sketches pictures of pumps.

Swonnr sketches pictures of a Fortress.


***

[Swonnrr]

Outpost "DrumBronzed", 1st Hematite.

We will take longer to start than i planned.
These dumbass brought neither wood nor axe.
That mean no wood until i line up a metal industry to forge an axe.
We have no visible sand neither. Glass industry might me a problem.
On the bright side, only digging the future water tunnel brought more ore than we can smelt, and we have free unlimited magma, and the proximity of the coast promise us unlimited water too once a filtration system is in place.

[blue emu]

These dumbass brought neither wood nor axe.
That mean no wood until i line up a metal industry to forge an axe.

Take your wagon apart to get three logs. Build a Carpenter's Workshop and turn one log into a Training Axe. Use it to cut down trees.

In the name of Dwarven progress, you are free to grammar police me.

Damn Brain just love to process Datas.

The plural is Data. The singular is Datum.

[Swonnrr]

These dumbass brought neither wood nor axe.
That mean no wood until i line up a metal industry to forge an axe.

Take your wagon apart to get three logs. Build a Carpenter's Workshop and turn one log into a Training Axe. Use it to cut down trees.

Except there is no wagon. (happen when theses stupid dwarves embark in stupid places, like on the edge of a volcano... )(that's why i didn't bring wood. I usually save the points by using the wagon for a carpenter workshop and a first axe.)

Also corrected 1st post.

[Girlinhat]

You're going to need some nice cave-ins to make this work perfectly.  Ideally, you want to obsidian-cast the whole of the volcano, dig out the fortress, then remove the obisidan that connects the fortress to the volcano, leaving only floor to keep the magma away.  Then you can collapse tiles strategically to remove the edges.

Also, you need short towers on the top to hold magma.  That way you can let the towers drain, and cause the volcano to 'erupt' as magma pours down the side of the mountain.

[Repseki]

Do volcanoes vary in size, or are they always about the same?

Just wondering because this seems like an awesome idea, but the tower might be a tad tight compared to what I normally build.

[firsal]

PTW. This has got to be the the craziest thing I've seen so far on the forums.

[vanatteveldt]

I think the access should be a tunnel in the middle of the fortress, not a bridge on the top. Also, there should be at least one level of magma covering the fortress again.

Code: [Select]


|*******|
|*#####*| 
|*#####*| 
|*#####==
|*#####*| 
|*#####*| 
|*******|

|=vulcano wall, *=magma, #=fortress, = =access tunnel, not to scale

Also, I think it needs an 'air'lock at the bottom to dispose of disposables.

Edit: bonus points if you get the access tunnel to depend on a support for sustaining the fortress, so you can flick a switch to let the whole fortress dive into the SMR.

Edit2: freshly cast obsidian that falls onto a solid obsidian wall remains there right? Because then it might be simpler to construct the cast by
1. build enough pumps on the lowest level of the fort to drain the volcano to that level
2. cast the floor of your fort, make sure to leave the edges free except for one tile
3. stop the pumps, allowing the magma to rise back to the old level
4. in the meantime, cast your walls from the top. If the water hits a magma tile away from the edge, the obsidian immediately caves in and sinks to your cast floor. It is probably easiest to cast the whole fortress solid and just dig out what you don't need

In retrospect, no idea if this is easier than casting from the top, but it feels like it should be fairly simple as you don't need to move the pumps around at all.

If you want even more bonus points, build the whole fortress out of ice or wood with glass windows to look out from :-). (Constructed walls are always magma safe, acc. to the wiki)

[Button]

Definitely don't want windows to magma, those can be deconstructed by tantrumming dwarves

...Actually do it, that sounds !!fun!!.

I second the idea of pumping out the magma level to the desired bottom of the fortress, removing all edges except the floor support, then letting the magma level rise again and casting from the top. Actually, I'm pretty sure it's impossible without pumping the magma down to the intended bottom of the fort.

Also, you need short towers on the top to hold magma.  That way you can let the towers drain, and cause the volcano to 'erupt' as magma pours down the side of the mountain.

Oh Armok yes this

PS Was that a Gogol reference I spied there? Молодец.

[gestahl]

Two cautions
1)If any layer that originally had magma in it has access to the layer below it, the magma will start refilling 1/7 at a time.
2)If you pump even one 7/7 of magma into the volcano, you may (confirm?) get pressure effects up to that level.

Best bet is to tap the volcano down at/near the caverns (you'll want them for water if no aquifer), set up a smasher for it to drain into, and cast a supported base ... something like this:
Edit: top down view

Code: [Select]

O= existing obsidian wall
C= cast obsidian support
B= cast base
m=magma
OOOOOOO
OmmmmmO
OmBBBmO
OmBBBmO
OmBBBmO
OmmCmmO
OOOOOOO
and then build that center square up to one level short of the magma line.

Once you have the base shape, you can let the magma fill and just cast from above, the cast tile drop down till it hits the supported base and stay there.

[Brilliand]

2)If you pump even one 7/7 of magma into the volcano, you may (confirm?) get pressure effects up to that level.

I think the pressure effects only last while the pump is running...

[Swonnrr]

1st Limestone 202.

The good news is that the water tunnel is up and running.
The bad news is that this Ducim Ezumfoker, our miner, managed to almost kill himself in the process, by falling 20z level. He's lucky that the bottom of the shaft was 6/7 water, and that Zuglar McCarpenter was nearby. Lucky may not be the word, though.Every one part of his body is broken, including his skull, and his outer brain have been hit too.
This being said, and despite the supposed brain damage, he managed to regain consciousness and craw 10z level of stairs, giving to pain every few steps before getting up again, before the rescue get to him. Damn tough little guy. I hope he will recover.
Sethal is at his bed, Unib is ready to relay him. It's good to have two proficient medics, sometimes.

On a side note, we also have a bunch of competent soldier coming regularly in the pack of migrants. Since we live on an island with raptors as the biggest threat, i guess they are all veterans seeking for a quieter assignement. Anyway, this weapon indusry found its use. And the local wildlife has started... learning to avoid our fort.
Next time these dingo will think twice before screwing the farmers.

About what's next: it's the beginning of autumn, and i'm waiting a load of sand in the coming weeks to start building those magma pumps.
In the meantime, i'm launching the water pump and starting to cast the first level of the volcano.

PS: I've received muliple suggestions of other overseers. I will keep the current operation running, while i'm reading them and doing some feasabilty study.
Engravure of the setup will be linked with next entry.

EDIT: Ducim didn't make it. His body rot rest in pieces peace.

[Hommit]

Just wondering because this seems like an awesome idea, but the tower might be a tad tight compared to what I normally build.

same question.

hmmm, i want try to do this too... maybe

[Button]

Do volcanoes vary in size, or are they always about the same?

Just wondering because this seems like an awesome idea, but the tower might be a tad tight compared to what I normally build.

I've only ever seen volcanoes use the exact same shape, occasionally rotated. I'd estimate you could fit about a 10x10 tower in there.

[Repseki]

I might have to try and cast new walls for it to enlarge the volcano before I make the tower...

I don't even know if that's possible, but I will try! And as this is the first time I have ever actually tried to cast obsidian likely engulf the world in flames in the process.