knowledge of sharpening drill bits you should know

Sharpening drill bits is an important skill that can extend the life of your tool and improve its performance. Here are some key points to consider when sharpening drill bits:

### Drill bit type
1. **Twist drill bit**: The most common type, used for general purposes.
2. **Brad Point Drill Bit**: Designed specifically for wood, it features a pointed tip for precise drilling.
3. **Masonry Drill Bit**: Used for drilling holes in hard materials such as bricks and concrete.
4. **Spade Bit**: A flat drill bit used for drilling larger holes in wood.

### Sharpening Tool
1. **Bench Grinder**: A common tool for sharpening metal drill bits.
2. **Drill Bit Sharpening Machine**: A special machine designed for sharpening drill bits.
3. **File**: A hand tool that can be used for minor touch-ups.
4. **Angle grinder**: Can be used for larger drill bits or when there is no bench grinder.

### Basic steps for sharpening twist drill bits
1. **INSPECTION Drill**: Check for damage such as cracks or excessive wear.
2. **Setting angle**: The standard angle for sharpening twist drill bits is generally 118 degrees for general-purpose drill bits and 135 degrees for high-speed steel drill bits.
3. **Grinding cutting edge**:
- Fix the drill bit on the grinding wheel at the correct angle.
- Grind one side of the drill bit, then the other, making sure the edges are even on both sides.
- Maintains the original shape of the drill bit when sharpening.
4. **CHECKPOINT**: The tip should be centered and symmetrical. Adjust as needed.
5. **Deburr the edges**: Remove any burrs produced during the sharpening process to ensure a clean cut.
6. **Test the drill bit**: After sharpening, test the drill bit on scrap material to ensure it cuts effectively.

### Tips for Effective Sharpening
- **KEEP COOL**: Avoid overheating the drill bit as this will temper the steel and reduce its hardness. Use water or let the drill bit cool between grinds.
- **Use the Correct Speed**: If using a bench grinder, a slower speed is usually better for sharpening the bit.
- **Practice**: If you are new to knife sharpening, practice on an old or damaged blade first, then use a good one.
- **KEEP CONSISTENT**: Try to maintain the same angle and pressure throughout the sharpening process for even results.

### Safety Precautions
- **Wear safety gear**: Always wear safety glasses and gloves when sharpening your blades.
- **Secure Drill Bit**: Make sure to secure the drill bit securely to prevent slipping during sharpening.
- **WORK IN A WELL-VENTILATED AREA**: Sanding can produce sparks and fumes, so ensure proper ventilation.

### Maintenance
- **CORRECT STORAGE**: Store drill bits in a protective box or holder to prevent damage.
- **Periodic Inspections**: Check drill bits regularly for wear and sharpen as needed to maintain performance.

By following these guidelines, you can effectively sharpen your drill bit and keep it in good working order, ensuring better performance and longer service life.