Bay 12 Games Forum

I don't understand the question. Did you find a magma pool in dangerous cavern? If you tap into cavern directly above it, you can build stairs right up to pool surface, then build a couple of floors in every side and place furnaces on them. Thus, you'll be safe from everyone except flying FBs.

Trap components have value multiplier of either 126 or 66 (higher than ANYTHING else), plus steel gives a multipler of 30, plus x5 for exceptional quality... You get the idea.

I just tested mixing water & magma at the top Z-level of the arena, and the resulting rough-hewn rock walls stay in place. I'll leave testing this in Fortress mode to DF players more experienced than me, but this is tentative support for myth #2 being real.

Edit: There was nothing under the walls to support them, and nothing around them. The only place they could have been getting support from was the Top Of The Sky.

I tested in arena as well. Walls safely hang at the highest z-level and can support walls UNDER them, but if I try to attach a wall adjacent to a wall that is not hanging on sky, but on wall that is hanging on sky, it will cave-in. Goodbye, flying forts  (Yes, I know this result can be achieved by turning cave-ins off)

The rest can be made or traded for (like an axe for a woodcutter)

You seriously intend to last in a succession specifically intended for newbies for half a year with 30 logs without an axe and instead take an ANVIL? 

Hm. If depot is fully submerged in magma, will traders still attempt to get in?

Nah, the exploit where you can just build walls all around your fort and thus resist any amount of goblins/megabeasts/dendrophiles/whatever outside is much cooler!

This is my end game mission as well. What is the best material for hammers, again?

Slade. Or, failing that, platinum. Or, failing that, silver. Or, failing that, well...
Just use magma.

Sorry to hear about your leg  At least you will be treated by human doctors and not dwarf ones 

...I'm mass forging iron pumpsections and corkscrews...

And yes, dolomite is magma-safe.