Drill

* See also Weapon Fun
* See also Wrench
* See also Better Combat
* See also Big Daddy ( who uses 'The Drill" )
==Big Daddy Drill== 
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Big Daddy Drill looks like something to unplug a sewage shit-pipe ( but only an arms length deep clog )
That Drill could only work on something 'soft', or would jam in the material almost immediately.
Rock ? Nope.
Have a Roto-Rooter attachment tool for Big Daddy ... ( That would also be a job task for the MMORPG - lots of pipes and long period of little maintenance - your own Residence to get your 'John' "John" - Named After Sir John Crapper, who was a promoter of the Flush Toilet...working, and likewise city tasks for the Player )
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Alternate :
An alternate drill (This one is something real - used for boring holes down through rock). Delta sticking this in Sofia Lamb's face woulda been fun ( we never were allowed THAT 'Ending' ).
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I suppose there could be another MMORPG Player Creation Contest for additional appliances/tools the Big Daddy could be equipped with.
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: Suchong clever.
: Suchong know what side to back.
: Suchong sell out Fontaine's "Ace In The Hole" to Ryan.
: Suchong must disappear til time Fontaine/Atlas become fishfood.
: Suchong Survivor.
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REAL DRILL :
Of course REAL rock drills look like these two pictures. What the BD were shown to HAVE, those could ONLY work as a scraper - Probably for SCRAPING soft marine gunk that accumulated on windows/in water intakes/etc ...
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Drill In Rock ? - Sorry, Not With That Thing :
With Rockwork, you drill and blast (with explosives), and then clear broken rock (shoveling). You use a drill which is a long very narrow cylinder, with cutting edge on its tip. And most often, was an impact chip/cut action to shatter a tiny bit of rock, instead of simple rotary grinding action (upon rock which is quite strong/resisting, and WILL constantly jam).
This (game) thing's Spiral shape would be PERFECT for getting stuck in the hole it is making in rock. That Drill thingee will wedge in real nicely ( When that happens, then the BD gets jerked 'a-round', or its arm gets twisted off ). Such a 'Drill' then has to constantly be reversed to try to un-stick/free itself. This game thing has a Nice Too-Huge cutting surface to disperse its cutting force (that's bad), and THAT maximizes its sticking friction. You could hardly have a design LESS efficient for 'drilling'.
Used for Chipping rock off a small surface, maybe, for as long as the power is available (Wherever that comes from : Compressed air - exhaust vented to ocean - inefficient, Combustion - fuel AND air storage required, Electric battery - generally a low energy capacity. ) Proper cutting requires significant bracing to force the drill's rotating cutting surface strongly against the rock being 'shaved'.
Much larger automated machines ( even Plasma Cutters ) would be needed to do sufficient 'rock' work for the huge volumes of hard rock required for 'expanding the city'. SO this IS NOT what that Drill is for.
That Drills function is better for Chipping/cleaning/unclogging accumulating Sea_Life (which is much softer or brittle than rock) OUT of a tube or off/across a flat surface like the inside of a large concrete tube the BD walks into -- much easier. But that Drill unit still must be powered and recharged frequently ( same thing could largely be accomplish with an oversized putty knife, though that wouldn't look as 'cool' ).
This 'Drill' is probably NOT applicable for cleaning windows ( maybe add oscillating brush mechanism ).
That Thing might also marginally be useful for stirring cement, but is inefficiently/clumsily shaped for that.
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ITS BEST USE : For scaring and possibly grinding up/impaling humans ( where its 'sticking' friction is actually an advantage ). It has a large cutting surface around it, so it can be swung side to side as well as strike forward with its point. Probably can do nice job bludgeoning (backup if its 'fuel' runs out). The BaS thing of shooting it was a bit too much ( another one of those things they thought (storyboarded) would 'look neat' ... ) 
Perhaps the original Drill unit had different detachable tool bits for various jobs ( rock drill, auger, grinder, window -rotary-brush, etc ... ) That cone shaped tool might actually have been developed to defend Little Sisters against Splicers. (Though a gun is probably better for that). 
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Drill Fuel - What is it? :
Big Daddies you might assume would do alot of work outside in the Ocean where there is no Oxygen to use as an oxidizer to use together with a typical 'fuel'. Therefore it must be some kind of mono-propellant type 'Fuel' ( like Hydrogen Peroxide which turns to steam and O2 in a catalytic reaction - usually contact with a special metal mesh ). Interestingly, Hydrogen Peroxide could also be used in a separate system to generate Oxygen for the Big Daddy's respiration - thus simplifying its supply issues somewhat.
Hydrogen Peroxide is a fairly nasty substance to handle, but Compressed Oxygen (and transferring it) can also be hazardous, separate from some combustible fuel (alcohol ? for its ability to be locally produced).
NOTE - Fuel requires an Oxidizer to 'burn'. The Following assumes that requirement is being met when a 'Drill' is used out in the Ocean.
Compressed methane or heavier gasses synthesized from methane which you can get from processing garbage or biological byproduct materials. Possibly. Butane liquefies at room temp ... Hydrogen usually is too bulky or too cold as a liquid. Ethanol would be good, as it is well understood, and can be made from agricultural products within Rapture.
Not Oil ? Rapture is supposed to be built on a volcanic site ( igneous rocks are not known for containing oil/fossil fuels ) and around it is ocean depths 3000 ft and deeper, with a similar rock makeup (a tectonic spreading zone, where igneous rocks come up from the mantle). I looked to find the nearest ocean oil drilling site to Rapture, which is about 500 miles away North-ish of Iceland. 
Does this fuel use warrant a major facility located that far away ? just to run some power tools ? Possibly the Trains/Bathyspheres/Subs ( with their bigger fuel consumption ) also used the same fuel, whichever it was.
The drill tool requires a motor driven by whatever power source. Fuel burned with an oxidizer in an engine like a Chainsaw or Leaf-blower for example. A bit of modification is needed to work in a range of pressures. The exhaust has to be expelled into water (if used out there) against the pressure of whatever depth Rapture really is ( I would make it ~600 feet to not be too much - but that's still ~ 20 Atmospheres pressure ). You'd have to allow for widely varying the compression in the cylinders ( or possible turbine ), but the combustion pressure can be up around 100 Atm allowing that to still work.
Maybe its just food pellets for ADAM-modified Hamsters in a running wheel, by that time...
Or a hand turned 'Peppermill' gun mechanism, like that Gatling gun in Infinite BS's Columbia ( Oops, sorry this isn't supposed to be Fantasy ).
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Dumb Ideas : BaSx Shooting the 'Drill' as a Weapon Action :
The game doesn't show (realistically) how long it takes to reload/recharge/ammo your weapons, nor whether the Drill flying works too well in air ( or if it gets fouled alot if not used carefully ). If you miss when firing, it could get stuck and the Big Daddy has to go dislodge it - Meanwhile being attacked or being stuck away from its Little Sister - possibly its just too clumsy to use in 'combat'.
So maybe it was a simple practicality to 'ditch' the whole idea. Spend enough money, and each 'Daddy' instead could have had a 40K/Space Marine multi-barrel Assault Cannon firing 30mm shells ... This is ( probably even if they thought of it in BS1/BS2 ), it would be a special complication for the game engine ( the cord/rope/wire at least are doable, and we do have the spears/bolts that stick into scenery and impale things ). 
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The 'drill came off' the BD's arm in that scene of an impaled Suchong (in BS1) ... THAT possibly was where they (BaSx DLC writers) got their idea for the 'Fire the Drill Grappling Hook' ( ??? maybe hoping it could be usable for the Player's Skyhook equivalent in BaSx ... to maneuver around a more 3D terrain, BUT was scrapped).
It would be very (Infinitely) bad if it is a second Suchong from another dimension (Tear) after the first one was 'killed' with the Drill ( thus resolving the 2 games 'contradiction' ). 
BTW, Who says that Audio Diary Accu-Vox don't/can't fall through dimensions ??? NOW THAT would have F$%^&ed up any attempt at clear narrations via that game element. Actually, that could be a MMORPG INFINITE-BS_REDO gimmick -- All the very strange 'Infinite' recordings (which Players will find/hear) indicating the multi-dimension aspect of that game universe. 
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That Drill :
As for carving up rocks, there would be big machines for doing that ( of course by BS1 times most of the large-scale construction had ceased ). Manual bulk 'drilling', when people had been 'blasting' with explosives for over a hundred years ? A shovel in that hand would have been more logical there ( it is called "mucking out" the resulting explosive-broken rock ).
Simply put, it is COMPLETELY the wrong shape (probably the worst shape - Perfect to get wedged/stuck in a hole being drilled in rock.) A simple look at REAL drill bits [Pix] will show you what it REALLY should look like.
There would be lots of scraping (cleaning) jobs to which that 'drill' mechanism WOULD be better suited. The shape appears better for working soft stuff like sewage plugging pipe outlets ( Ick - Infectious diseases inflicted with something used to work sewage ... ). Also Scraping sea life out of working surfaces ...
Maybe it might be good for shredding flesh (as a 'Protector'), but we saw the same thing on the Maintenance Cyborgs doing their work. (Interchangeable Tool being mentioned somewhere might have alleviated this whole conundrum.)
(( I'll keep discussing that 'Fired Grappling Hook' Drill (BaS) function for some derisive ridicule elsewhere. ))
YamHand [] 
The visual aspect from an early mutant concept that must've struck a cord, and eventually turned into the 'iconic' Big Daddy with 'drill' arm. (( and then regurgitated through later attempts of things like Firemen and Big Bird (Song Bird) in Infinite BS). ))
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That's not a Drill .... THIS IS A DRILL !!!!
Some machinery like this might have been used while building various Tunnels in Rapture. Cleaning up the 'roughed in' tunnel contours ( and scooping-up/breaking the loose rock after blasting ... )
Note this Drill's shape - Very SOLID Digging Teeth, instead of that continuous spiral blade the Big Daddy drills have ( that's something more suited to grinding hamburger meat or scraping algae and other Sea Life from inside pipe inlets and machinery vents/accesses ).
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Not To Mention a QuadrilleQuadrille - From a Benny Hill TV Show Skit :
"A Quadrille ?"
"I told you not to mention that ..."
A "QUAD DRILL" would be the ultimate Big Daddy - Tool Attachment ( Probably only seen in plans you find somewhere in The Ruins by some wanna-be entrepreneur ) .
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