Defense Planning Meeting, 24th Galena 302
Events transcribed by Chief Engineer Vamp
Magma Chief Julius cleared his throat, bringing the meeting to a start. "Now then lads, take your seats. As you all know, most of the masons are down in the cave sorting out the crypt after that unfortunate incident with the cavern beast, so we've only got the one architect here to advise us. We've got to build an impenetrable defense, better even than our own front gate, and it has to work without dwarfs on guard. This is a serious challenge as I'm sure I don't need to tell you, which is why our three work crews are working in cooperation on this one. So, miss Red, now that we've got iron being produced, how do you want us to build the vault walls?"
Urist the Red paused in thought before replying, "I've only ever worked with stone. I've never had to build a wall that could stand up to an attacker who had time to use the proper tools. Iron should do it if you can join it properly though. Have you got any way to make the walls solid iron? How can you seal the bricks together?"
"Oh, lots of ways miss, lots of ways. There's soldering, that's where you use a metal like tin as a sort of glue. You lay down powder in between the things you want to join and some flux, then you stick it all in the forge until there's a tight join. Of course we can't do that with the whole room as I'm sure you can understand! Or then there's brazing which is similar except that you use..."
Urist tried to interrupt, "Uh... Julius"
"... but you wouldn't want to use that in such a small room, not if you like breathing air at least, but then there's various kinds of welding..."
"Julius, I don't need this much detail..."
"... friction stir welding is really interesting, you see what you do is you get a steel pin, a chain and a gear mechanism, then you get some sprightly young peasant to turn the handle as fast as it'll go..."
"All I need to know is whether you can seal iron bricks together into a strong wall. I don't need you to teach me how to do it, I'm just the designer."
"... or then there's catalytic welding, that's really rare to see anybody trying it because you need the blood of an iron man, but if you can get it? Oh my, if you can get it you're really in business! You use that to dissolve part of the..."
"Julius! Can you build a wall or not!?"
The other dwarves slowly moved over to the other end of the table, leaving Julius and Urist to their discussion.
Kezan took the pause as an opportunity to present his plans. "I know how we can defend this vault properly. The wall doesn't really matter, if somebody makes it that far then we've failed already. What we need is traps. There's loads of spare copper, more than we need for making bronze, so I say we use some of it. I've got these schematics for a sawblade trap, you see? You put a giant saw-edged disc on the end of this swinging arm, with a gear to make it spin against that pinion..."
Tekkud the metalsmith was the one to interrupt this time. "Oh not another one! Cut this short. What will it do, and what do you need us to do."
"Er... well, ok. All it would need is gears and some huge sharpened copper discs. You can make those easily enough can't you?"
"Alright. Yes. Sheet copper isn't a problem, just hammer some copper flat, not difficult at all."
"Right, and so what happens is that anybody who treads on that trigger next to the wall releases that pin, then... whirrwhirrrrWHIRRRRR whooom! SLICE! and suddenly they've got no limbs."
The assembled dwarfs paused to imagine this, even the arguing pair over at the other end stopping and turning to stare at the wild gesture as Kezan imitated the sound of a slicing disc.
"Vamp, you'd better look at this. Will it work?"
"It'll be very noisy, and slow to trigger. It's not exactly subtle. What's to stop them dodging the blade?"
"Oh, that's easy, you just put in more blades. Leave nowhere safe to dodge to. It's a confined corridor isn't it?"
A pleased grin spread over the faces of everybody around the table as they imagined this, visions of a corridor full of shining razor edged death behind every face.
"Let's do it."