What is a string trimmer?

String trimmer:
A string trimmer, also called a "weed-whip", "whipper-snipper", "weedwacker", a "weed eater" or (in the UK and Ireland). A "strimmer", is to use a flexible monofilament line instead of a cutting blade of grass and other plants near objects, or tools or irregular in steep terrain. It includes a cutting head at the long axis of the handle or handles,and sometimes a shoulder strap.

History:

String trimmer by the Emporia, Kansas Tim West in the late 1960s invention. His first model is connected to the hub structure welding small chain of 20,000 rpm router by using bolts and mounted on a metal pole. It is not only good trim weeds and grass, it is completely obliterated neighbor basketball. The most striking model consists of Houston, Texas, who conceived the idea while watching a cleaning brush automatic car wash George Balas rotational movement in the early 1970s invention. His first trim member by additional heavy fishing popcorn can bolted to the edging. Balas developed to this point he called "weed eater" as it eats grass and weeds around the trees.


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Chainsaws in popular culture -- Sports&Relation to reality

Sports
Portland Timbers soccer team mascot, Timber Joey, cut off from the team's victory using a chainsaw logging board each timber timber objectives. The player who scored the goal maintained wood share.

Relation to reality
Although they inflict a lot of damage to biological capability, real life chainsaw attack and murder are rare. This may be due to their heavy weight clumsy, loud noise, relative to other potential risk of injury to the user and close arms high prices, while also having the value of these drawbacks make them powerful weapons intimidation.

Chainsaw has been repeatedly against zombies iconic weapons, Evil Dead series inspired from the above examples section.

Chainsaw Massacre is a real interview with Brian De Palma claimed to have inspired chainsaw scene in Scarface. Real case, in which De Palma apparently saw, and study the crime scene photos of the film, involving multiple victims and dead bodies stuffed into metal drums. Murder DePalma described his call, Scarface should be based on its graphic content is part of the screenwriter Oliver Stone has gone from months of study and two police collected transfer certificate based on the reality of the AR (some of which who testified in defense movie) and the actual drug traffickers.


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Chainsaws in popular culture -- Music&Comedy object

Music
US rapper Eminem Eminem character will use his chainsaw, Texas Chainsaw Massacre on the style.

Object of comedy
Although the original top chainsaw violence depicted in their ability to cause a person's body to produce brutal bloody injury or pain, it is low-budget B-movie outstanding since production chainsaw image as too independent comedy, often bumbling expression terror.

This image is usually in cartoons, comedy after comedy series stars. It later showed occasionally cry wave part self-referential horror, such as David Arquette's trip device.

The most famous portrayal of a chainsaw comedy stereotype is that a chainsaw wielding maniac in a hockey mask (see for example in the Simpsons episode "Cape Feare"). Ironically, horror movie archetype hockey mask killer Jason Voorhees has never really been portrayed in the movie wielding a chainsaw, chainsaw While there has been some film be used against him.

Band Pride worm has a song called "Malcolm", in which the title character of "chainsaw solve his problems, he never had the same problem twice."


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How replace and install angle grinder grinding

Angle grinder is widely used in metal processing and construction industries, as well as emergency rescue work.Angle grinder has big variety, choose a suitable angle grinder, the most important factor is to choose how much angle grinding and how powerful motor, other factors may be considered pneumatic or electric power, speed and shaft sizes.

 

The larger the angle grinding, the greater the demand for electric power. Many of the angle grinding specifications, special requirements in China, many companies can be customized. The pneumatic angle grinding usually relatively small, which is a decisive factor pneumatic grinder, pneumatic grinder more portable, more suitable for high-precision work, and pneumatic grinder without motor, can underwater operations, so widely used.

 

Angle grinder is driven by the rapid rotation of the motor rotating grinding to sanding and grinding of metal edges and burrs, and therefore sanding and grinding daily work, grinding has become the most common and most easily polish machine loss accessories.

 

Angle grinder grinding wheel has a variety of sheet materials, slabs wheel, rubber wheel, wire wheels and the like.

 

Replace angle grinder grinding: The first step: Remove the screw angle grinder plate. Step two: Install the grinding. The third step: Hold the head lock, use a wrench to tighten anti-silk cover.

 

Replace Note: 1, be sure to hold the head and hold the lock before removing and tightening anti-silk cover. 2, the installation mill films, two press boards must be pressed grinding mouth hole.

 

In angle grinders and angle grinder is the most easily damaged brush, after which it wear resistance becomes large, the spark will therefore become larger, causing damage to the rotor, a stator in the long run will be destroyed, so regular check to be replaced. To change the brush after the previous agreement, or will accelerate switched wear.

 

The most important is the size of the brush holder to be consistent, to elastic consistency. If tight, put a small brush wear accord, because the brush at work or heat, thermal expansion and contraction, due to the brush and to exchange good contact sheet can not be so burned rotor.

 

There is a lock button on the machine head, pressed before removing angle grinding. Long-term use because of dirt and not flexible, difficult to eject after pressing, grinding angle after the change if not eject, if the boot is easier to get a faster gear. Simply check at the time of repair, "oil cleaner" to spray the dust, you can have the original sensitivity.

 

For a grinder, angle grinder bearing to carefully view the bearing is complete. If the bearing is not complete closure will be missing, which must take the grease are replaced, otherwise it would damage gear.

 

If the change angle grinder, angle grinder to the stator, we must not forget fitted plastic ring, since it plays a useful tuning air flow direction. It prevents the rotor and the stator coil heating.

The difference between using the impact drill and hammer

Impact drill is a power tool and rotating both with shocks. It comes with an adjustable mechanism, when the adjustment ring is rotated in the non-impact position, fitted with a metal twist drill in drilling. When the adjustment ring in the rotational position of the belt and the impact on the placement with carbide drill bit can drill holes in brick, concrete walls, roof, and the scene.

 

Usually only drill with rotary manner, particularly suited to the needs of a small force of drilling materials, such as cork, metal, brick, tile, etc., while the impact drill is versatile, as they can either use the "single drill" mode, You can use the "impact drilling" mode, so it-yourselfers and professionals, it is worth choosing basic power tools.

 

Impact drill works by rotating and impact to rely on work to produce a continuous force, and a single impact is very slight, to BOSCH best sellers GSB13RE example, every minute impact frequency of 44800 times to produce a continuous impact. Therefore, the hammer drill can be used for drilling on natural stone or concrete.

 

Hammer rely rotation and beat to work. Single beat power is very high, and have a higher beat frequency to BOSCH best sellers GBH2-22RE example, load hammering frequency 4400 times a minute, a single impact force of 2.2 joules per minute so that each can produce significant force. Compared with the hammer, impact drill requires more pressure to drill into hard materials, so when drilling in stone and concrete, in particular relatively hard concrete, hammer should be used. Some hammer drill and impact on the shape difference is not obvious, it should be in the purchase of the technical parameters of the difference.

 

Impact drill under normal circumstances can not be used as a drill used: first, because the impact of drilling in the use of direction is not easy to grasp, prone to misuse, the opening is too large; second is to drill is not sharp, so that the open hole is not neat, burrs or cracks appear; Third, even above a switch, but also try not to drill, unless you use special wood drill bit, but due to the speed of the drill quickly, it is easy to drill holes at the black and fever, thus affecting the life of the drill.

 

Reasons and repair for big spark of the power tools

Power tools generate sparks large site is mainly copper brush and rotor head due to friction,The main reason is so big spark exhaustion brushes and rotor head copper sheet mill

It caused serious damage.

 

1.The load big big spark, no light load small spark or spark, is caused by load changes show little relationship that the motor can continue to run.But do not let the long motor overload, easy to burn out the motor coil.

2.View the exhaustion of carbon brushes,carbon brushes exhaustion of copper rotor head hurt the most, because of the exhaustion of carbon brushes, wire brushes direct friction sheet copper head on, causing damage to the insulation sheet copper head, rotor nullify .When Brush height less than the original height of 2/ 3 points, should replace the brushes. When the change should be about all changed. Brush consistent pressure.

3.Checkrotor head copper or copper sheets if badly worn out, and view sheet copper head wear serious judgment method is the most direct: big spark, waste carbon brushes, slow speed or even smoke.

4.Also there may be a large spark foreign materials inside the machine, the friction caused by the copper head piece. If the bearing bad entry of foreign matter into the machine casing damage foreign body, foreign body into the external environment and so on.

Chainsaws in popular culture -- Video games

In the video game first appeared chainsaw is expected in 1982, The Texas Chainsaw Massacre Atari games. But in this game, with opponents Leatherface chasing down the victim to the point of low sales and will see limited exposure highway Because many shops refuse to sell, adapt and other Halloween horror film together.

While the chain saw will be used as weapons of horror film inspired worship Splatterhouse series of games in 

1970/1980, and by the appearance in a major enemy of 

some of the beats of the time window (eg Robocop arcade game) will not be used It was not until the 1990s. In 1993, the first first-person shooter game Doom is the first game, 

including a chainsaw, as the player's weapon; concessions horror game Chainsaw worship they hold the same position in the horror movie, set them to be able to defeat terror, horror turn against itself, the combination of the heroes of courage tool. Some horror game with a chainsaw will include Resident Evil series, Dead Rising, Dead Rising 2,Silent Hill, male model, dead space, killing four people were killed and 2 series of gears of war, MadWorld, no more hell multi-room,of course,

Evil Dead spin-off game.

Mainly in reference to Scarface, chainsaw will also commonlyused in organized crime-themed video games appear. 

These measures include the Grand Theft Auto series (starting with Scarface inspired GTA: Vice City), 50 Cent: Bulletproof, Saints Row 2, and of course Scarface game.

Though less common, chainsaw (or more specifically fiction inspired chainsaw weapon) also made some sci-fi war game 

appearance. Warhammer 40,000 franchise basis Prominent examples include the War series gear chainsaw bayonet "Ripper" radiation series saw blade, and evil, killing and destruction is much greater, read the epic tool called "chainswords" on right. Another avatar based chainsaw weapon in its existence as a large melee weapons onboard the popular Facebook game battle station to see.

Some real-time strategy games like Warcraft III: 

Reign of Chaos which use a chainsaw to cut down trees in order to achieve its intended purpose units. In these games theunit can almostalways use the chainsaw as a weapon, as well as several video games in addition to this is not a weapon ofany background portray chainsaw.

Lollipop Chainsaw chainsaw use as the main weapon of the game.

Dorothy Stella glow characters using a chainsaw as one of her main weapons katana together.

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