Additional information
| Set | No.1-60 60 Piece, No.61-80 20 Piece |
|---|
BORDO Wire Gauge Bright Finish HSS Jobber Drill Set
- Bordo Wire Gauge Quick Silver M2-HSS Twist Drills.
- 118° Split Point (crankshaft point).
- Split point is self centering and reduces the need for end thrust. Friction at workpiece is reduced.
- 118° point angles are ideal for use in materials such as mild steel and cast iron.
- The 118° point creates easily controlled chips which are wide and thin.
- Bright Finish Twist Drills have no surface treatment and are supplied in the as-ground condition.
- These tools are suitable for general purpose use, particularly for non-ferrous applications.
- Gauge size drill calculations are generally made utilising a reference book or table.
- For example, to drill a hole which is 10 thou (thousandth of an inch = .001) bigger than a 1/8? bolt, the user must first work out that 1/8? is 125 thou, so the required hole size is 135 thou. Using a reference table establishes that you would need a number 29.
- Number drill bit gauge sizes are analogous to, but different from, American wire gauge.
- Number gauge is most commonly used from size 80 (the smallest) to size 1 (the largest) followed by letter gauge size A (the smallest) to size Z (the largest).
- Number gauge is actually defined down to size 97, but these smallest sizes are very rarely used.
Related products
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Drill Bits & SetsBORDO Scotch Pattern Auger Bit 610mm
- Long Scotch Pattern Auger Bit High Carbon Steel.
- Heavy duty two flute auger bits are extremely efficient cutting – perfect for Australian soft and hard woods.
- Wide flutes provide rapid chip evacuation with a heavy duty worm point that resists breakage.
- Unlikely to deviate due to grain or imperfections in the timber (such as knots).
- Heavy duty milled flute design.
- Hardened cutting edge for long life in hard timber.
- Fully-forged bit for maximum durability.
- Resharpenable.
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Drill Bits & SetsSUTTON Jobber Drill Sets – Heavy Duty Cobalt
Sutton Tools Heavy Duty Cobalt jobber drills are industrial quality for drilling materials that have high hardness and tensile strength such as cast iron, bronze, hard steel & stainless steel. These drill bits feature a thick core for increased rigidity in hard materials.
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Drill Bits & SetsSUTTON Jobber Drill Sets – Viper Plus
Drills bits with EXTRA bite. Viper Plus is an industrial quality drill bit designed for machine and hand held drilling in stainless steel, steel, aluminium, cast iron, brass, wood and plastic. Featuring a Futura Nano PVD coated tip – the latest generation coating for ultimate wear resistance and increased productivity. This drill bit has been independently tested to exceed 2X tool life compared to standard Viper drill bits.
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Drill Bits & SetsBORDO 4 Cutter Glass and Tile Drill Set
- 4-10mm 5 Pce 4 Cutter Glass and Tile Drill Set
- Tungsten Carbide 4 Cutter Glass and Tile Drill Set
- Precision diamond ground, double chamfered spear point tungsten carbide for fast cutting and extreme tool life (when used at slow to medium speeds).
- Fast starting with reduced bit wander.
- Suitable for use in: glazed and un-glazed ceramic tiles, glazed porcelain tiles, through-body porcelain tiles, plate (float) glass and annealed glass.
- Not suitable for use with toughened or laminated safety glass.
- Use a slow speed with steady but gentle pressure.
- Reduce the pressure at break through.
- For increased bit life use a cutting fluid/lubricant such as water or turpentine to reduce heat.
- When drilling multiple holes in ceramic tiles, or when drilling vitrified porcelain, we recommend using either Bordo ceramic tile drills, the Bordo mist drill product range or Brilliant Diamond core drills.
- Tungsten Carbide (commonly referred to as Carbide) is a chemical compound containing equal parts of tungsten and carbon atoms.
- Carbide is three times stiffer than steel and is much denser than either steel or titanium.
- Carbide has a very high abrasion resistance and can also withstand higher temperatures than standard HSS.
- Carbide tools are often used for machining hard materials such as ceramics and stainless steel, as well as in situations where other tools would wear away, such as high volume production runs.
- Because carbide tools maintain a sharp cutting edge better than other tools, they generally produce a better finish on parts, and their temperature resistance allows faster machining.
- Whilst tungsten carbide is extremely hard it is also brittle so it is important to avoid bit “chattering” as this is the most common cause of tool failure.
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