Draper Tap and Drill Set - 28-Piece
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Product Information
Full details
This Draper 28-piece Tap and Drill Set is designed for tradespeople and serious DIYers who need to create or repair threads in metal. Its key benefit is providing a comprehensive range of essential metric taps and HSS drills in a convenient case. A potential caveat is that it is primarily suited for metalworking and may not be ideal for softer materials.
All features
| Model Part Number | 40891 |
|---|---|
| Brand | Draper |
Extended Product Information
FAQs
What material are the taps made from?
The taps are manufactured to DIN 371 and DIN 376 standards, typically indicating they are made from high-quality steel suitable for threading.
What does 'secondary and bottoming taps' mean?
Secondary taps have a tapered lead, ideal for starting threads in through holes. Bottoming taps have a short taper and are used to create full threads at the bottom of a blind hole.
Are the drill bits suitable for hard metals?
The drills are High-Speed Steel (HSS) manufactured to DIN 338 and ISO 235/1, making them suitable for drilling various metals, though appropriate technique and lubrication are crucial for harder alloys.
Can this set be used for wood or plastic?
While primarily designed for metal, the set may be used on plastics and some hardwoods with care. However, specific woodworking taps and drill bits are generally recommended for those materials.
How do I determine the correct drill size for a tap?
The correct drill size (tap drill size) depends on the tap's nominal diameter and thread pitch. It's crucial to consult a tap drill size chart or refer to the manufacturer's recommendations for each specific tap.
What is the purpose of the display sleeve?
The display sleeve is part of the packaging, offering a way to see the contents clearly for easy selection and providing basic product information.
How should I clean and maintain the set?
After use, clean all components with a degreaser or solvent, dry them thoroughly, and apply a light coat of oil to prevent rust before returning them to the case.
Troubleshooting
Tap breaks during use
Ensure the pilot hole is the correct size, use adequate lubrication, do not force the tap, and make sure it is cutting straight.
Threads are rough or incomplete
Check that the correct drill size was used, ensure the tap is cutting straight, and use sufficient cutting fluid. Make multiple shallow passes rather than one deep cut.
Drill bit is not cutting effectively
Ensure the drill bit is sharp and suitable for the material. Use appropriate speed and pressure, and consider using cutting fluid.
Difficulty starting the tap
Ensure the pilot hole is clean and deburred. Start the tap by hand, ensuring it is perfectly perpendicular to the surface. Use a tap wrench for controlled turning.
Pros and Cons
Pros
- Offers a good selection of metric tap and drill sizes for common applications.
- Includes both starting and bottoming taps for versatile thread creation.
- Made with HSS drills for durability and efficient metal drilling.
- Comes in a protective case for organized storage and portability.
- Manufactured to recognized DIN and ISO standards for quality assurance.
Cons
- May be overkill for occasional, light-duty threading tasks.
- Primarily designed for metal; might be less suitable for wood or plastics.
- Specific metric sizes might not cover every specialized thread requirement.
- Requires user knowledge of tap and die procedures for effective use.
Setup, Compatibility & Care
Setup:
This set requires manual operation. Select the correct tap size and pitch for your desired thread. Use the corresponding HSS drill bit to create a pilot hole of the correct diameter. Apply a suitable cutting fluid or lubricant to the tap and the workpiece, especially when working with metals.
Compatibility:
- Materials: Primarily designed for use with various metals. Compatibility with plastics and woods may vary; testing on scrap material is recommended.
- Threads: All taps are metric.
- Drills: HSS drills are suitable for drilling metal.
Care:
- Clean taps and drills after each use to remove debris and cutting fluid.
- Dry tools thoroughly before storing to prevent rust.
- Store components securely in the provided case to prevent damage and loss.
- Periodically inspect taps for wear or damage; sharpen or replace as needed.