Metal Air
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 AUTO BODY SHEET METAL AIR PUNCH FLANGE TOOL NEW LK $49.90 Time Remaining: 28d 10h 13m Buy It Now for only: $49.90 |
 MAC ADG410 MAC TOOLS CUT OFF TOOL GRINDER WITH METAL GRINDING WHEEL AIR TOOL $19.99 Time Remaining: 6h 17m |
 Pistol Grip Preumatic Shear Air Shear Sheet metal $29.95 Time Remaining: 28d 3h 34m Buy It Now for only: $29.95 |
 12V Mini Metal Air pump Compressor Tire Inflator Max Voltage 138v w Hose $50.99 (3 Bids) Time Remaining: 2h 5m |
 NEW High Speed Air Metal Cutting Hack Reciprocating Saw $15.49 Time Remaining: 6h 28m Buy It Now for only: $15.49 |
 HVLP Air Spray Gun Gauge Boat Auto Painting Tool 25 mm Tip Primer Metal Flake $39.90 Time Remaining: 3d 11h 40m Buy It Now for only: $39.90 |
 Portable 12v Mini Metal Air pump Compressor Tire Inflator w carrying bag $39.99 Time Remaining: 1d 1h 53m |
 Central Pneumatic Air High Speed Sheet Metal Reciprocating Sawzall Saw Cuts Pipe $29.99 Time Remaining: 8d 4h 7m Buy It Now for only: $29.99 |
 Portable 12v Mini Metal Air pump Compressor Tire Inflator w Hose Bag + Gauge $55.99 Time Remaining: 15d 15h 53m Buy It Now for only: $55.99 |
 Motorcycle Car Vehicle Metal Dual Head Tyre Tire Air Chuck $7.40 Time Remaining: 1h 19m |
 Eastwood Reciprocating Pneumatic Air Metal Saw $54.94 Time Remaining: 17d 7h 58m Buy It Now for only: $54.94 |
 Reflective COPPER metallic air brush PPG Dupont Kandys $9.99 Time Remaining: 11d 9h 21m Buy It Now for only: $9.99 |
 INGERSOLL RAND 1 2 inch AIR IMPACT 231A TOOL WITH SOFT COVER RED METAL TAG $69.95 Time Remaining: 14h Buy It Now for only: $76.95 |
 4oz Auto Air Metallic Copper $12.94 Time Remaining: 5d 1h 58m Buy It Now for only: $12.94 |
 3 16 AIR PUNCH AND SHEET METAL FLANGE H D TOOLS $46.54 Time Remaining: 23d 12h 57m Buy It Now for only: $46.54 |
 Snap On MG725 1 2 Metallic Purple Air Impact Wrench Gun Limited Edition Tool $178.38 (9 Bids) Time Remaining: 5d 10h 57m |
 Portable Mini Air Compressor Metal New Unit Airbrush $44.95 Time Remaining: 14d 5h 15m Buy It Now for only: $44.95 |
 NEW Snapon Air Chisel Bit SHEET METAL RIPPER PHG51A $19.99 Time Remaining: 1d 7h 11m Buy It Now for only: $19.99 |
 snap on blue point air pneumatic engraver scribe with hose metal working hobbies $19.50 (9 Bids) Time Remaining: 4d 11h 10m |
 4oz Auto Air Metallic Burnt Orange $12.94 Time Remaining: 5d 2h 18m Buy It Now for only: $12.94 |
 PORTABLE HD MINI METAL AIR COMPRESSOR KIT PORTABLE NEW $44.99 Time Remaining: 27d 8h 49m Buy It Now for only: $44.99 |
 USED SNAP ON TOOLS AIR HAMMER DOUBLE BLADED PANEL SHEET METAL CUTTING BIT PH57B $6.57 Time Remaining: 15h 1m |
 High Speed Air Metal Saw 2 blades included $26.95 Time Remaining: 1d 46m Buy It Now for only: $26.95 |
 NEW ENGLISH WHEEL AIR PNEUMATIC PLANISHING HAMMER METAL $126.99 Time Remaining: 5d 9h 3m Buy It Now for only: $126.99 |
 Portable Mini Air Compressor Metal New Unit Tire Inflator Gauge Heavy Duty Tool $42.98 (1 Bid) Time Remaining: 1d 2h 16m |
 035 MM METAL AIR BRUSH KIT AIR DUAL ACTION WITH 2 GLASS JARS AND METAL CUP $27.99 Time Remaining: 15d 6h 13m Buy It Now for only: $27.99 |
 4oz Auto Air Metallic Silver $12.94 Time Remaining: 5d 2h 18m Buy It Now for only: $12.94 |
 USED SNAP ON TOOLS AIR HAMMER DOUBLE BLADED PANEL SHEET METAL CUTTING BIT PH57B $5.52 Time Remaining: 14h 17m |
 4oz Auto Air Coarse White Metallic $12.94 Time Remaining: 5d 2h 18m Buy It Now for only: $12.94 |
 PRO PNEUMATIC AIR NIBBLER SHEET METAL CUTTING AIR TOOLS $39.99 Time Remaining: 23d 5h 24m Buy It Now for only: $39.99 |
 Motorcycle Car Vehicle Metal Dual Head Tyre Tire Air Chuck $7.50 Time Remaining: 3h 12m |
 3 Air Cut Off Tool Exhaust Muffler Grinder Sheet Metal Cutter Cutting $24.99 Time Remaining: 2d 13h 52m Buy It Now for only: $24.99 |
 16oz Auto Air Metallic Brandy Red $38.94 Time Remaining: 5d 2h 18m Buy It Now for only: $38.94 |
 Bicycle Car Auto Silver Tone Metal Tyre Tire Air Chuck $7.49 Time Remaining: 3h 14m |
 CREATEX AUTO AIR ALL 7 METALLIC COLORS AIRBRUSH PAINT $62.99 Time Remaining: 25d 6h 54m Buy It Now for only: $62.99 |
 H D AIR METAL SHEARS CUTTER PNEUMATIC TOOLS $34.99 Time Remaining: 25d 11h 14m Buy It Now for only: $34.99 |
 HD AIR SHEET METAL ALUMINUM ALLOY STEEL CUTTING SHEAR TOOL AIR TOOL $39.99 Time Remaining: 1d 1h 52m |
 Air Shear Preumatic Sheet Metal Aluminum Plastic Cutter CuttingTool $34.99 Time Remaining: 2d 13h 54m Buy It Now for only: $34.99 |
 Air Straight Line Sander Air Compressed Wood Metal Plastic Sanding Dual Piston 9 $43.99 Time Remaining: 16d 8h 52m Buy It Now for only: $43.99 |
 H D 3 16 PUNCH AND SHEET METAL FLANGE AIR TOOL $39.99 Time Remaining: 2d 1h 44m |
 16oz Auto Air Metallic Burnt Orange $38.94 Time Remaining: 5d 2h 19m Buy It Now for only: $38.94 |
 Silver Tone Metal Air Paint Spray Gun for Clearcoat Autobody $15.81 Time Remaining: 29d 19h 50m Buy It Now for only: $15.81 |
 HD Air Metal Cutting Shear Tool Air Tool Compressor Auto Body Repair Cutter New $43.49 Time Remaining: 2d 9h 26m |
 Mac Sheet Metal Ripper Air Hammer bit 5 8 AH 907 $12.50 Time Remaining: 29d 23h 5m Buy It Now for only: $12.50 |
 New Auto Body Sheet Metal Air Punch Flange Tool Welding 3 16 16ga w WARRANTY $47.98 Time Remaining: 14d 22h 44m Buy It Now for only: $47.98 |
 AIR NIBBLER SHEET METAL CUTTING AIR PRO PNEUMATIC TOOL $36.99 Time Remaining: 1d 10h 4m |
 Gal Auto Air Metallic Bronze $225.94 Time Remaining: 5d 1h 58m Buy It Now for only: $225.94 |
 Air Compressor Metal Plastic Dual Chuck Tire Inflator 97 $9.65 Time Remaining: 9d 2h 5m Buy It Now for only: $9.65 |
 H D AIR METAL SHEARS CUTTER PNEUMATIC TOOLS $39.99 Time Remaining: 2d 11h 12m |
 Metal Auto Truck Motorcycle Racing Car Dial Tire Tyre Air Pressure Gauge Tool $3.66 Time Remaining: 4d 12h 44m Buy It Now for only: $3.66 |
 Snapon Sheet Metal Ripper Air Hammer Chisel 5 8 PHG51A $15.75 Time Remaining: 27d 13h 8m Buy It Now for only: $15.75 |
 SNAP ON Air Hammer Bit 5 3 8 Sheet Metal Ripper PH51D Very Nice $24.99 Time Remaining: 2d 23h 20m Buy It Now for only: $29.00 |
 GOLDEN metallic pigment air brush auto paint PPG HOK TOUCH UP HVLP SPRAY GUN $9.99 Time Remaining: 6d 5h 48m Buy It Now for only: $9.99 |
 Portable HD Mini Metal Air Compressor Kit Portable New Durable Auto Home DIY Pro $44.49 Time Remaining: 4d 5h 34m |
 16oz Auto Air Metallic Midnight Blue $38.94 Time Remaining: 5d 2h 18m Buy It Now for only: $38.94 |
 Portable 12v Mini Metal Air pump Compressor Tire Inflator w carrying bag $49.99 Time Remaining: 6d 8h 12m Buy It Now for only: $49.99 |
 Motorcycle Car Vehicle Metal Dual Head Tyre Tire Air Chuck $7.79 Time Remaining: 10h 21m |
 PORTABLE MINI METAL AIR COMPRESSOR KIT AUTO WATER PROOF GREAT FOR CAR SUV VAN $37.99 Time Remaining: 7d 11h 52m Buy It Now for only: $37.99 |
 4oz Auto Air Metallic Blue Silver $12.94 Time Remaining: 5d 2h 18m Buy It Now for only: $12.94 |
 Bicycle Car Auto Silver Tone Metal Tyre Tire Air Chuck $7.41 Time Remaining: 7h 55m |
 Portable 12v Mini Metal 12V Air Compressor Tire Inflator Kit included hose $45.99 Time Remaining: 14d 9h 35m Buy It Now for only: $45.99 |
 High Speed Air Sheet Metal Reciprocating Sawzall with 2 Blades Leather Gloves $34.99 Time Remaining: 26d 4h 35m Buy It Now for only: $34.99 |
 GOLDEN metallic pigment air brush auto paint PPG HOK TOUCH UP HVLP SPRAY GUN $3.99 Time Remaining: 4d 11h 6m Buy It Now for only: $9.99 |
 16oz Auto Air Metallic Gold $38.94 Time Remaining: 5d 2h 18m Buy It Now for only: $38.94 |
 16oz Auto Air Metallic Russett $38.94 Time Remaining: 5d 2h 18m Buy It Now for only: $38.94 |
 Air Nibbler Metal Cutter Up To 16 Gauge Metal Auto Body Repair Cutting Tool New $44.25 Time Remaining: 2d 7h 6m |
 16oz Auto Air Metallic Bronze $38.94 Time Remaining: 5d 2h 18m Buy It Now for only: $38.94 |
 16oz Auto Air Metallic Silver $38.94 Time Remaining: 5d 2h 18m Buy It Now for only: $38.94 |
 12V Mini Metal Air pump Compressor Tire Inflator Max Voltage 138v w Hose $48.99 Time Remaining: 4d 9h 33m |
 4oz Auto Air Metallic Gold $12.94 Time Remaining: 5d 2h 18m Buy It Now for only: $12.94 |
 Central Pnuematic High Speed Air Metal Saw blades not included $25.00 Time Remaining: 10d 19h 43m Buy It Now for only: $25.00 |
 H D AIR METAL SHEARS CUTTER PNEUMATIC TOOLS $39.99 Time Remaining: 4d 11h 12m |
 MEIS DPT R Door Paneling Tool Air Hammer Adapter Sheet Metal Flanging $45.99 Time Remaining: 1d 10h 49m Buy It Now for only: $45.99 |
 Pistol Grip Preumatic Shear Air Shear Sheet metal $29.95 Time Remaining: 8d 10h Buy It Now for only: $29.95 |
 MILTON INDUSTRIES AIR PRESSURE GAGE ASSEMBLY 0 400 PSIG COMES WITH METAL CASE $13.99 Time Remaining: 3d 21h 39m |
 NEW 16 Gauge Air Nibbler Sheet Metal Cutting Shear Tool $39.75 Time Remaining: 20d 9h 26m Buy It Now for only: $39.75 |
 32oz Auto Air Metallic Silver $66.94 Time Remaining: 5d 2h 18m Buy It Now for only: $66.94 |
 BRAND NEW AIR BODY RECIPROCATING PNEUMATIC SAW METAL STEEL ALUMINUM SHEAR CP $22.45 Time Remaining: 3d 5h 53m Buy It Now for only: $24.95 |
 Gal Auto Air Metallic Burnt Orange $225.94 Time Remaining: 5d 2h 18m Buy It Now for only: $225.94 |
 4oz Auto Air Fine White Metallic $12.94 Time Remaining: 5d 1h 19m Buy It Now for only: $12.94 |
 3 AIR CUT OFF AUTOMOTIVE METAL TOOL $18.99 Time Remaining: 2d 12h 56m |
 4oz Auto Air Metallic Russett $12.94 Time Remaining: 5d 1h 58m Buy It Now for only: $12.94 |
 4oz Auto Air Metallic Brandy Red $12.94 Time Remaining: 5d 2h 18m Buy It Now for only: $12.94 |
 NEW Central Pneumatic 3 High Speed Air Cutter Cut Sheet Metal Cutting Tool Cu $24.00 Time Remaining: 4d 11h 11m |
 4oz Auto Air Metallic Bronze $12.94 Time Remaining: 5d 2h 18m Buy It Now for only: $12.94 |
 4oz Auto Air Metallic Midnight Blue $12.94 Time Remaining: 5d 2h 18m Buy It Now for only: $12.94 |
 Portable Mini Metal 12V Cigarette Plug Air Compressor Tire Inflator Kit w HOSE $39.99 Time Remaining: 3d 7h 44m |
 Sheet Metal Trimmer Air Chisel OLD1959 BRAND NEW $22.54 Time Remaining: 16d 9h 22m Buy It Now for only: $22.54 |
 New Air Punch Flange Tool Sheet Metal 3 16 hole 90 PSI $51.99 Time Remaining: 29d 15h 4m Buy It Now for only: $51.99 |
 Long Reach 4 Pneumatic Air Metal Cutting Cut Off Tool $150.94 Time Remaining: 6d 9h 3m |
 4 Long Metal Barb Quick Coupler Tire Air Chuck Inflator for Car $18.75 Time Remaining: 16d 20h 56m Buy It Now for only: $18.75 |
 Auto Air Colors 4300 Series Special FX Metallic Paint 4343 32 $59.90 Time Remaining: 10d 17h 11m Buy It Now for only: $59.90 |
 Air Compressor Metal Plastic Dual Chuck Tire Inflator 97 $9.94 Time Remaining: 14h 8m |
 Air Die Grinder metal fabrication grinding porting $25.19 Time Remaining: 18d 5h 47m Buy It Now for only: $25.19 |
 16oz Auto Air Fine White Metallic $38.94 Time Remaining: 5d 2h 18m Buy It Now for only: $38.94 |
 PRO PNEUMATIC AIR NIBBLER SHEET METAL CUTTING AIR TOOLS $37.99 Time Remaining: 6d 13m |
 16oz Auto Air Coarse White Metallic $38.94 Time Remaining: 5d 2h 18m Buy It Now for only: $38.94 |
 MATCO TOOLS AIR METAL BLASTER KIT MT2466K W ACCS GREAT CONDITION LOOK AT THIS $250.00 Time Remaining: 24d 18h 9m Buy It Now for only: $250.00 |
 Mac AD54 3 8 Sheet Metal Air Drill $22.49 Time Remaining: 6d 22h 7m |
 HD AIR METAL CUTTING SHEAR TOOL AIR TOOL COMPRESSOR $44.99 Time Remaining: 27d 8h 38m Buy It Now for only: $44.99 |
Metal Air
Waterproof Lithium-Air Batteries
A company based in Berkeley, CA, is developing lightweight, high-energy batteries that can use the surrounding air as a cathode. PolyPlus is partnering with a manufacturing firm to develop single-use lithium metal-air batteries for the government, and it expects these batteries to be on the market within a few years. The company also has rechargeable lithium metal-air batteries in the early stages of development that could eventually power electric vehicles that can go for longer in between charges.
Interest in lithium metal-air batteries has been growing in recent years, along with the demand for lighter power sources for devices ranging from plug-in hybrid vehicles to laptops such as IBM 02K6651, IBM FRU 92P1125 and IBM FRU 92P1121. In lithium-ion batteries, the electrodes are made of materials such as graphite, while in a lithium-metal battery, the anode is made up entirely of lithium metal, and the surrounding air can act as the cathode.
Lithium-metal batteries approach the energy density of fuel cells without the plumbing needed for these devices; in theory, the maximum energy density is more than 5,000 watt-hours per kilogram, or more than 10 times that of today's lithium-ion batteries. Lithium metal-air batteries are also very lightweight because it's not necessary to carry a second reactant. Lithium metal is "the holy-grail battery material," says Steven Visco, chief technical officer and founder of PolyPlus.
IBM recently announced that it would develop lithium metal-air batteries for the energy grid and for transportation. "Lithium ion is the gold standard, but what can beat it is lithium metal," says Paul Beach, president of battery manufacturer Quallion of Sylmar, CA.
Using lithium metal as a battery electrode, however, has proved problematic, mainly because the material reacts rapidly and violently with water. "People have thought about lithium-air batteries for decades, but there's always water in the air," says Visco. Exposure to even traces of water rapidly degrades the material.
PolyPlus has solved this problem by developing what the company calls a "protected lithium electrode." The device consists of a flat, rectangular piece of lithium metal overlaid on either side with a ceramic electrolyte material called lisicon. The solid electrolyte is impermeable to water but lets lithium ions pass through. Another coating protects the electrolyte from reacting with the lithium metal. And finally, the edges of the device are sealed with an aluminum-polymer laminate similar to a potato-chip bag. The laminate provides a watertight seal, and it's flexible, so it doesn't create any strain when the electrode shrinks with use.
When the lithium-metal electrode is placed in water, lithium ions leak out and react with oxygen dissolved in the water or with the water itself. To make a lithium metal-air battery, the device is fitted with a gas-diffusion electrode similar to those used for zinc metal-air hearing-aid batteries. When the battery is switched on, the electrode draws in oxygen through the membrane to react with the lithium ions. But unlike hearing-aid batteries, these devices won't self-discharge over time. "You can leave the battery on the shelf for months and expect it to work because the membrane protects it," says Visco. And because they're based on high-energy lithium metal, these batteries last much longer and are more lighter than zinc-air batteries.
PolyPlus is currently testing lithium metal-seawater batteries in conjunction with the Monterey Bay Aquarium Research Institute to determine whether they can withstand real working conditions. One concern is that microorganisms in the ocean will grow on the batteries' surface and impair their operation, although preliminary tests have produced good results.
The single-use batteries made by the company employ a piece of lithium metal about two centimeters squared and three millimeters thick; they have a storage capacity close to that of the lithium-ion batteries in today's laptops at one-fifth the weight. The company has partnered with battery manufacturer Quallion to produce batteries based on PolyPlus's electrode designs and will make batteries under contract for an undisclosed government agency. Quallion says that lithium-metal electrodes can be processed using much of the infrastructure already in place for making lithium-ion batteries. "Certain precautions are needed to handle the material, but there are no tricks to it," says Beach.
Lithium-metal batteries have the potential to be "transformational" for underwater applications, says James Bellingham, the Monterey Bay Aquarium Research Institute's chief technologist. Most ocean research takes place close to shore because, as Bellingham says, "in the ocean, there are no plugs" for recharging the sensor-laden autonomous craft that monitor the seas. Higher energy-density batteries could enable much better monitoring of the effects of climate change on the planet, says Bellingham.
About the Author
Which is better, a plastic or metal air soft gun?
Im looking to get a G4 A1 air soft gun from Airsoft GI, but I cant decide whether to get a metal or plastic. Im not sure how heavy the metals ones are, and thats my biggest concern.
The G4 series guns from ASGI would be a recommendation as they tend to be really nice guns and a very good deal. The G4 series uses G&G's plastic series guns which I think are actually a VERY nice polycarbonate blend that is extremely sturdy and feels really nice. The plastic of that body is about as durable as some metal bodies and light weight. It isn't cheap or flimsy at all it's very sturdy and feels almost like metal, it also looks really nice. I've seen people drop a G&G plastic series gun from an 8 foot ceiling to the ground and nothing broke it still worked great.
I like the G4 series because they come with customized looks as they have nice free-float rail systems and occasionally nice flip up sights etc.
Metal guns are there for realism purposes only; if your between an nice metal gun and a G4. I own a G&G metal M4 and it is only about 1-2lbs heavier than the plastic series guns. The issue with metal bodies isn't so much the weight but the price as my gun is about $110 or so more expensive than the plastic series just because of a metal body.
Just as a thing I feel I should note that all G&G guns come standard with a 6.04 tight-bore barrels while other companies tend to have 6.05 or more which will make the gun less accurate. What I am saying here is that G&G guns tend be more accurate stock than most if not all other companies models of the guns G&G makes. ALSO just remembered, the plastic series guns come with G&G's new pneumatic blow-back system which is really cool and I do not believe they have added these features to their metal guns as of yet.
Reno Air Races 2006 Precious Metal