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[forsaken1111]

Ahh, excellent.

[gtmattz]

Yeah, I just used the design from the wiki, I was mainly trying to show how it is completely possible to do this safely with a minimal embark (e.g. no stone for mechanisms).

[tps12]

Was on the edge of my seat waiting to see what the dogs were for.

[gtmattz]

They were a red herring XD, or more accurately, they were simply something convenient to snack on  and keep the visiting elephants and gorillas busy whilst getting the job done.

[Rose]

personally, I never bothered with the whole collapsing thing
I just dug to squares, and another two a bit away, built pumps between them, and fill in one of the squares while the two pumps keep the place empty. rinse and repeat till you have a ring of constructed wall. if you have two layers, make sure the first ring is wide enough for all the pumps required for the second.

[gtmattz]

I have never had good luck with that method, propbably because of the incessant job cancellations due to water when trying to construct the walls drives me nuts and made me learn to use the collapse method, which is quite fast and efficient, and doesn't use up precious wood that could go to important things like barrels, bins, buckets, and beds in the early fort, and charcoal once I get steel production going.

That and I just really enjoy dropping stuff, doing it makes me feel all dwarfy inside.

[Unshaven]

I wanted to let you know that I managed to bust the double loam/sandy aquifer using the method you outlined here. Of course mine didn't go nearly as smoothly as your fort... As I forgot to bring copper and the place I chose was infested with undead.. anyways I melted the axes (made some nice wooden replacements) and was good to go. Sad thing is I hit the carvern almost immediately after busting it...I have about one level of stone to work with.. I may have to create an above ground fort.

[forsaken1111]

I wanted to let you know that I managed to bust the double loam/sandy aquifer using the method you outlined here. Of course mine didn't go nearly as smoothly as your fort... As I forgot to bring copper and the place I chose was infested with undead.. anyways I melted the axes (made some nice wooden replacements) and was good to go. Sad thing is I hit the carvern almost immediately after busting it...I have about one level of stone to work with.. I may have to create an above ground fort.

Nah, just move everything into the caverns and wall off a few larger chambers from the rest. Then you have ample wood, underground farmland, and probably water.

[Psieye]

A fort can easily be dug out inbetween caverns. After tapping into the stone from somewhere, it's just a larger projec to pierce the aquifer again in some other location with a much bigger entrance to let caravans in. That is, if you want to design the fort around the assumption that wagons will one day return.

[Raziel_Blaze]

I followed this example and it seems that after the first section I dropped the "After this I built a staircase to get down and channel the area out for the plug to fall into:" doesn't seem to work. For some reason the dwarfs will make the top part of the staircase but will refuse to make the bottom. I think it has something to do with them thinking the ground levels are not on z levels next to each other. Are there any techniques to get around this? If I try to dig into the ground to carve out stairs this seems to work, but then I spring a leak. I even tried building an elaborate scaffolding above the area and made a huge rectangle that would block up the leak and when I dropped it it just shattered. Any advice?

[FluidDynamite]

A very trivial point, but I liked how you saved building materials by constructing ramps instead of a pair of up/down stairs. I always forget about ramps...

[denito]

after I few reads I think I understand, Haven't used levers with supports before but I'll give this method a shot.

When you bring down the first ring and it drops into the sandy aquifer, then you pump out the water inside the ring.. what keeps the aquifer from just refilling it, ? I means sure the sides are now a safe zone but center should still be producing water doesn't it ?

Based on this and your earlier comment about constructing floors on an aquifer tile (which would accomplish nothing) I think I understand the source of your confusion.

The answer is empty aquifer tiles do not produce water on their own; it actually leaks out of aquifer wall tiles and just pools on the floor tiles.