The needle scaler is a pneumatic tool that uses tiny chisels to remove rust, paint, and corrosion from metal surfaces. It is operated by a small piston and can adjust to contoured surfaces. It is not recommended for use on softer surfaces and can wear out quickly. It is available for under $50 USD.
Rust is the ancient enemy of metal, and the needle punch is part of the modern arsenal against rust. Small enough to be held in one hand, a needle scaler, also known as a needle gun or needle gun, is a pneumatic tool that uses tiny chisels that rotate at high speed to quickly remove rust, old paint, and corrosion from metals hard.
Perhaps best known for its association with the United States Navy and cleaning old ships, the needle scaler has also migrated into common use around the home and in auto repair. It is prized for its ability to poke its fast-moving “needles” into tight places and also for how quickly it can reduce a surface to bare metal. It is operated by a small piston that moves back and forth faster than the eye can track – 2,500 to 5,000 times per second – and can automatically adjust to contoured surfaces.
As its popularity grew, the needle scaler was produced by a number of power tool manufacturers. Most scalers are powered by compressed air, but electric models have also come onto the market. Generally, they weigh less than five pounds (about 2.3 kg).
Manufacturers recommend that any surface to be treated with a needle gun scaler is first cleaned of surface oil and dirt. The tool is most effective when applied to small areas at a time and held at a 90 degree angle. Because chisels only need to travel a small distance due to their speed, the needle scaler is also capable of putting a fine edge along the edges of surfaces.
Variations between scalers on the market generally have to do with the number of needles and how fast they move. The strength of the cleaning action can also wear less expensive scalers quickly, so it’s important to determine how much the tool will be used. It should also be noted that the needle scaler is not a silent instrument and some operators may choose to wear earplugs.
It’s also not recommended for use on softer surfaces like aluminum, wood, chrome, brass, lineoleum, or stainless steel, because the needles can actually scrub the metal surface beneath the rust and paint. Heat can build up rather quickly around the commercial end of a needle gun scaler, but dissipates quickly when the tool is shut down to recharge the compressor.
Most handgun scalers sell for under $50 US Dollars (USD), making them a handy tool for do-it-yourselfers.
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