16-210Mm Hss Hole Saw Set High Speed Steel Drill Bit Drilling Crown For Metal Alloy Stainless Steel Plastics Wood Cutting Tools

Name: M42 All Metal Opener
Material: M42 high-speed steel
Scope of application: Suitable for processing various wooden boards, iron sheets, 45 # steel, gypsum boards, plastics, PVC, acrylic, roof and other materials for drilling operations.
Features: high hardness, wear resistance, accurate positioning, good chip removal, and high efficiency
Attention: When processing a thickness of 10mm or more, it is necessary to remove the spring on the center drill, which is suitable for use with AC electric hand drills and bench drills.
instructions
1. This type of hole opener comes with a positioning center drill and requires manual installation and tightening.
2. During the drilling operation, the center positioning drill first cuts, and only starts the operation at the end when it is in place. The center drill plays a fixed role.
3. When cutting continuously, please choose a lower speed.
4. To prevent knife breakage, please do not let the cutting edge of the hole opener collide violently with the cutting material.
5. It is necessary to add water or coolant to cool down, otherwise there is a risk of burning the drill bit.
6. Operators should wear protective glasses to protect their eyes. Wear a protective mask when working face up.
7. Earplugs should be worn well during long-term work to reduce the impact of noise.
8. After long-term operation, the opening device is in a scorching state, and care should be taken to avoid burning the skin when replacing it.
9. After use, apply anti rust oil for a longer service life.