So I just breached my first cavern layer ever, and to my luck there's a giant magma pool right next to my breach point (not RIGHT next to it, close enough i can see the pool but not close enough for a dwarven hot tub). I want to pump magma up about ~30-40 stories so my new forges are located kinda close to my existing stockpiles for some degree of convenience. I've already designed a power system using windmills, my local brook, and waterwheels that has about 1k power before powertrain consumption with possible expansion room should I need it.
I also know(?) that magma doesn't obey pressure the same way water does but im still unclear on how exactly it works with the blood of armok. So I have two questions:
1.) If i build a reservoir for magma storage say, 3 levels deep, and cut channels on the lowest level connected to my reservoir for forges, will i get overflow if I cut straight channels? Or if I build it so there's a diagonal path to the forge area to eliminate pressure? Or should I use floodgates (mag-safe of course)?
2.) For the magma source: I read on the wiki that magma tube slowly refill over time back to their original depth, and my current plans have my magma 'draw' at 1 level below the surface like this:
_________________ <----open space layer
XXXXXXXXXXXXXXX[][] <---------magma w/ undug walls
XXXXXXXXXXXXXXX----------- magma and path to pump stack
If I want a large reservoir of magma stored immediately (say, with the reservoir having a slightly larger cross-sectional area than the origin pool) shouold i put the draw-point further down so i don't have to wait for it to refill?