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The Ultimate Guide to Hardware: Essential Reading for Custom Furniture
With economic development and the globalisation of the internet, a flood of foreign power tools has entered the market. Take the hammer drill as an example: the variety available is vast and diverse. Unless one is a professional user, it's likely difficult to possess thorough knowledge of these tools. This lack of understanding may lead to errors during selection and use, or result in challenging situations. So, how should one select a hammer drill? What precautions should be taken when using it? Today, we shall address these points one by one.
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With economic development and the globalisation of the internet, a flood of foreign power tools has entered the market. Take the hammer drill as an example: the variety available is vast and diverse. Unless one is a professional user, it's likely difficult to possess thorough knowledge of these tools. This lack of understanding may lead to errors during selection and use, or result in challenging situations. So, how should one select a hammer drill? What precautions should be taken when using it? Today, we shall address these points one by one.
Advantages and Disadvantages of Hammer Drills
Advantages: High efficiency, large hole diameter, and extended drilling depth.
Disadvantages: Significant vibration, causing some damage to surrounding structures. Unable to penetrate reinforcing steel within concrete structures effectively. Due to operational requirements, cannot be positioned too close to buildings.
Tips for Selecting a Hammer Drill
1. Opt for a multi-functional hammer drill that combines hammer drilling and regular drilling modes. This allows it to function as a standard drill when set to the regular drilling mode, enabling hole-making in metal or wood and screw-tightening during cabinet installation. Most hammer drills on the market today are multi-functional.
2. Opt for a hammer drill with variable speed control. A low speed setting when lightly pressing the switch facilitates smooth initial drilling (e.g., on smooth surfaces like tiles, preventing both drill bit slippage and surface chipping). Switch to high speed for regular operation to ensure efficiency.
3. Reversible rotation is essential. When drilling into walls, drill bits may occasionally become stuck. Simply switch to reverse rotation and gently pull the bit outwards to dislodge it. Without this function, removal becomes laborious and may cause injury.
4. Opt for a hammer drill with a vibration damping system. An effective damping system enhances operator comfort and reduces fatigue. Soft rubber grips further improve handling comfort.
5. Opt for a lighter hammer drill to reduce fatigue during extended use. We recommend lightweight models weighing under 3kg, particularly advantageous for overhead work.
6. Lithium-ion hammer drills offer greater convenience. Their rechargeable batteries enable immediate use and simpler storage. However, lithium-ion models remain relatively scarce on the market.
7. Pay attention to the hammer drill's chuck mechanism. If the chuck is square-shaped with four grooves, purchase square-shaped drill bits with four grooves. If the chuck is rectangular with two grooves and two slots, select rectangular drill bits with two grooves and two slots. Failing to check the drill bit specifications before purchasing may result in incompatible bits, causing unnecessary hassle.
Precautions for Using Hammer Drills
1. Pre-operation checks: a. Ensure casing and handle show no cracks or damage; b. Verify cable, plug, and switch are intact with normal operation; c. Confirm all protective covers are secure and electrical safeguards are reliable.
2. After starting the tool, run it idle to check for smooth, unimpeded operation. During operation, apply force steadily without excessive force.
3. Maintain a firm grip on the drill or hammer drill handle. When drilling, first press the drill bit against the working surface of the special rivet, then start the tool. Apply moderate force to avoid wobbling. If the rotational speed drops sharply, reduce force to prevent motor overload. Never apply pressure using wooden supports.
4. When drilling, take care to avoid reinforcing bars within concrete.
5. Electric drills and hammer drills are rated for 40% intermittent duty; prolonged continuous use is prohibited.
6. For operations involving holes larger than 25mm in diameter, a stable working platform must be provided with surrounding guardrails.
7. Overloading is strictly prohibited. Monitor sound levels and temperature rise during operation; cease work immediately and inspect should any abnormalities occur. Should prolonged operation cause tool temperature to exceed 60°C, cease operation and allow natural cooling before resuming work.
8. During operation, never touch the cutting blades, moulds, or grinding wheels of hammer drills or saws with bare hands. Should any dullness or damage be detected, immediately halt operation for sharpening or replacement before continuing work.
9. Never leave rotating machinery unattended.
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