- 100% Brand New And High Quality
- Made Of High-Quality Materials, Durable
Name: Double-head Twist Drill
Material: Hss / High Speed Steel
Specification: 3/3.2/3.5/4/4.2/4.5/5/5.2mm
Features: Double-head Usable, Metal Nemesis, 135-degree Sharpening, Sharp And Hard
Uses: Wood, Aluminum Alloy, Zinc, Steel, Iron, Stainless Steel, Etc.
Electric Drill Processing Operation Tips:
1: When Drilling, The Drill Bit And The Stainless Steel Plate Are Perpendicular To 90°
2: If The Hole Is Larger Than 6mm, First Use A 3.2mm-4mm Drill To Make A Small Hole And Then Use A Large Drill To Ream The Hole
3: The Electric Drill Chuck Must Clamp The Double-headed Drill, And The Exposed Part Is As Short As Possible. The Cutting Edge Of The Drill Does Not Need To Be Too Sharp, Too Sharp
4: The Number Of Revolutions Of The Electric Drill Should Be Between 800-1500, And The Effect Is Better. The Number Of Revolutions Should Not Be Too Large, Which Will Burn The Drill Bit And Cause Annealing
5: Before Punching, You Can Use The Sample Punch (also Can Be Replaced By Nails) To Punch The Center Point At The Punching Position First, So That The Drill Will Not Run Off.