Tool Definitions (This is a long one!)
I'm sure some of these have been posted before but this is the most complete list I have seen.
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Hammer: Originally employed as a weapon of war, the hammer nowadays is used as a kind of divining rod to locate the most expensive parts adjacent the object we are trying to hit. Also, very effective at fingernail removal.
Utility Knife: Used to open and slice through the contents of cardboard cartons delivered to your front door. It works particularly well on boxes containing items such as seat covers, vinyl records, liquids in plastic bottles, collector magazines, refund checks, rubber or plastic parts, convertible tops or Tonneau covers. Especially useful for slicing work clothes, but only while in use. These can also be used to initiate a trip to the emergency room, so a doctor can sew up the damage.
Electric Hand Drill: Normally used for spinning steel Pop rivets in their holes until you die of old age, but it also works great for drilling roll bar mounting holes in the floor of a sports car just above the brake line that goes to the rear axle.
Hacksaw: One of a family of cutting tools built on the Ouija board principle. It transforms human energy into a crooked, unpredictable motion, and the more you attempt to influence its course, the more dismal your future becomes.
BAND SAW: A large stationary power saw primarily used by most shops to cut large pieces into smaller pieces that more easily fit into the trash after you cut on the inside of the line instead of the outside edge. Also excels at amputations.
TABLE SAW: A large stationary power tool commonly used to launch wood projectiles for testing wall integrity. Very effective for digit removal!!
SKILL SAW: A portable cutting tool used to make boards too short.
BELT SANDER: An electric sanding tool commonly used to convert minor touch-up jobs into major refinishing jobs.
Aviation Metal Snips: See Hacksaw.
Pliers/Channel Locks: Used to round off bolt heads. Sometimes used in the creation of blood-blisters.
Vise-Grips: Generally used to finish off the rounding of bolt heads that would not come loose with pliers. If nothing else is available, they can also be used to transfer intense welding heat to the palm of your hand.
Oxyacetylene Torch: Used almost entirely for lighting various flammable objects in your shop on fire such as the grease inside the wheel hubs you want the bearing race out of. Also used to light those stale garage cigarettes you keep hidden in the back of the Whitworth socket drawer (What wife would think to look in there?) because you can never remember to buy lighter fluid for the Zippo lighter you got from the PX at Fort Campbell.
Zippo Lighter: See oxyacetylene torch.
Whitworth Sockets: Once used for working on older British cars and motorcycles, they are now used mainly for hiding six-month old Salem's from the sort of person who would throw them away for no good reason.
Drill Press: A tall upright machine useful for suddenly snatching flat metal bar stock from your hands so that it smacks you in the chest and flings your beer across the room, denting the freshly-painted project which you had carefully set in the corner where nothing could get to it.
Wire Wheel: Cleans rust and paint off old bolts and then throws them somewhere under the workbench with the speed of light. Also removes fingerprint whorls and hard-earned guitar calluses in about the time it takes you to say, "Damn It". Will easily wind a tee shirt off your back.
Hydraulic Floor Jack: Used for lowering a Mustang to the ground after you have installed a set of Ford Motorsports lowered road springs, trapping the jack handle firmly under the front bumper.
Phone: Tool for calling your neighbor to see if he has another hydraulic floor jack.
Eight-Foot Long Douglas Fir 2X4: Used for levering an automobile upward off of the trapped floor jack handle.
Tweezers: A tool for removing wood splinters.
Snap-On Gasket Scraper: Theoretically useful as a sandwich tool for spreading mayonnaise, but used mainly for getting dog s**t off your boot.
Soldering Iron: An extremely hot tool, initially used for connecting wires, that, when dropped, is always caught by the wrong end.
X-ACTO Knife: An extremely sharp tool similar to a Mechanic's Knife. It too, when dropped, is always caught by the wrong end.
E-Z Out Bolt and Stud Extractor: A tool 10 times harder than any known drill bit that readily snaps off in holes drilled into broken off bolts.
Timing Light: A stroboscopic instrument for illuminating grease buildup on crankshaft pulleys.
Two-Ton Hydraulic Engine Hoist: A handy tool for testing the tensile strength of ground straps, hydraulic clutch lines and anything else you may have forgotten to disconnect.
Battery Electrolyte Tester: A handy tool for transferring sulfuric acid from a car battery to the inside of your toolbox after determining that your battery is dead as a doornail, just as you thought.
Trouble Light: The mechanic's own tanning booth. Sometimes called a drop light, it is a good source of vitamin D, "the sunshine vitamin", which is not otherwise found under cars at night. Health benefits aside, its main purpose is to consume 40-watt light bulbs at about the same rate that 105-mm howitzer shells might be used during, say, the first few hours of the Battle of the Bulge. More often dark than light, its name is somewhat misleading.
Straight Bladed Screwdriver: A tool for opening paint cans. Sometimes used to convert common slotted screws into non-removable screws and butchering your palms.
Craftsman 1/2 x 16-inch Screwdriver: A large motor mount prying tool that inexplicably has an accurately machined screwdriver tip on the end without the handle.
Phillips Screwdriver: Normally used to stab the lids of old-style paper-and-tin oil cans and splash oil on your shirt; can also be used, as the name implies, to round off Phillips screw heads.
Air Compressor: A machine that takes energy produced in a coal-burning power plant 200 miles away and transforms it into compressed air that travels by hose to a Chicago Pneumatic impact wrench that grips rusty suspension bolts last tightened 40 years ago by someone in Detroit, and neatly rounds them off.
PRY BAR: A tool used to crumple the metal surrounding that clip or bracket you needed to remove in order to replace a 50¢ part.
HOSE CUTTER: A tool used to cut hoses too short.
DAMMIT TOOL: Any handy tool that you grab and throw across the garage while yelling "DAMMIT" at the top of your lungs. It is also the next tool that you will probably need.
EXPLETIVE: A balm, usually applied verbally in hindsight, which somehow eases those pains and indignities following our every deficiency in foresight