If there is
any magma left it will harm dorfs. That just makes it more FUN!
Think about it in a more dwarven manner...
simple problem == complex/insane solution that could destroy your fortress.
For my magma rinse cycle, I plan on finding out if I can suspend magma in mid-air using a series of pumps.
XXXXXXXXXXX
XXXX.XXXXXX
X.%%6XXXXXX
XXXX1XXXXXX
XXXXXXXXXXX
Magma pump on left. Hopefully it will put out enough to spread the magma across the pit (the one in my game is actually 5 wide) but not enough to make this level 7/7 all the time.
This level will probably also have the gears for supplying power to the below pumps.
X~XXXXXXX~X
X~XX2%%~X~X
X~XX4%%~~~X
XXXX1%%~XXX
XXXXXXXXXXX
Magma intake on left for the pump above, magma flowing back to storage (not shown) on right. These pumps should suck up all the magma from z -6 at a faster rate than the above pump can push it out, creating a suspended magma-fall.
<skip z -6 because it's just empty space>
XXXXXXXXXXX
XXXX+XXXXXX
XXXX+D+++++ smelters ->
XXXX+XXXXXX
XXXXXXXXXXX
Hopefully, this area will be magma-free, and contain only !!+pig tail sock+!!, bones, and -narrow iron chainmail-
Of course, if I screw up even once, or if this just simply won't work, it has a huge potential for burning down my fortress. All the better! The reasoning behind this design, by the way, is that I HATE having to deal with hatches and bridges and floodgates. This only needs a couple levers to control gear assemblies.
Now where's that dwarf heaven worldgen info so I can start working on this mini-megaproject?