- Drills: what quality of steel?
- Classic bits and drills
- Percussion, how does it work?
- Bells and trephines
- Specific wicks
- For small diameter holes
- The joints of the drill bits
- The mandrels
- Which machines for which holes?
- Hammer drill
- perforator
- Drill press
To drill more or less soft wood species, high-performance steels or alloys, stone or concrete masonry... How to always use the tool suitable for drilling?
Drills: what quality of steel?
There are drills hardened metal and others hardened steel (HSS) more resistant that can work up to 600° C without altering their hardness. Some metal drills are coated with a titanium nitride alloy (gold color) or titanium carbide (gray-blue color) which strengthens their coating and thus increases their longevity. Those with cobalt (bluish color) can pierce the hardest metals and withstand up to 1000° C.
Finally, some may incorporate aluminum oxides or boron nitride. But they are less common.
For frequent use, do not hesitate to invest. And keep your locks dry so that their edges do not rust.
Classic bits and drills
The three-point quick-action wood drill bit is used for precise and clean drilling in all types of wood. | |
The high performance wood drill facilitates fast drilling in the hardest exotic species. | |
| The helical wood wick has a double knife that facilitates the removal of chips from deep holes. |
The flat drill bit allows for shallow and non-through flat bottom drilling. | |
The concrete wick has a tungsten carbide pellet that resists the toughest materials. | |
The ceramic wick, porcelain and marble, looks like the concrete wick with its black pellet. | |
The titanium nitride metal drill allows the drilling of hard metals (steel, cast iron). | |
The HSS (high speed steel) metal drill allows the drilling of soft metals, irons and common steels. | |
The multi-material pellet drill makes it possible to pierce all types of materials. |
Percussion, how does it work?
For successful drilling in the most resistant materials, the use of percussion is essential.
The hammer drill uses a splined shaft (with claws) that moves the drill back and forth. Effective in traditional masonry, its striking force becomes insufficient in the concrete. It is then necessary to exert a much stronger pressure for the wick to penetrate... which can damage the machine.
For its part, the perforator works thanks to a ram under pressure that comes to hit the tail of the drill. For an identical result, this powerful machine requires on average three times less effort than a drill.
Bells and trephines
These tools are intended for drilling large diameters as much in wood as plaster, stainless steel, zinc or masonry. Use them for the passage of pipes, the installation of spots, sockets and switches.
Bell saw
The hole saw has a central bit and a cylindrical cutter with teeth. It is mounted on a tool holder, and it is easy to change its diameter.Trepan
The bit is intended for masonry only and exists in different diameters. It is a circular piece of metal incorporating a drill bit in the center.Specific wicks
The three-way wood wick pierces like a strawberry and twice as fast as a standard wick. | |
The tungsten carbide "4-point" drill bit drills glass and tile with a simple screwdriver. | |
The triangular point drill pierces the glass, the mirrors, the faience but also the thin sheets. | |
The cylindrical diamond drill bit is designed for thick glass and hard tiles (porcelain stoneware, marble). |
For small diameter holes
For wood, metal or plastic, there are also bits and drills with diameters of 0.5 to 6 mm for small precision drilling.
The joints of the drill bits
- The hexagonal tail (A) is designed for chucks with a hexagonal hole. It can be used with a self-locking or keyed chuck. Its shape allows a great torsional force (no slip) but the guidance is less precise.
- The round shank (B) can be used with a self-locking or keyed chuck. It offers great precision, but has a limited twisting force.
- SDS + (C) or SDS Max joints (D) are intended for masonry. They fit with one hand in the chuck of a perforator.
The mandrels
- The keyed chuck makes it possible to tighten bits and drills with round or hexagonal shanks up to 13mm in diameter between its jaws. It can usually be mounted on an SDS + punch (not on an SDS Max punch).
- The self-locking chuck is more practical and faster because it does not require a key.
Which machines for which holes?
The choice of a machine depends on the use you intend to make.
For occasional work, a percussion drill is enough. A DIY enthusiast will purchase a perforator and / or drill press according to his needs. To choose your model, take into account performance (power), longevity (quality of parts) and ergonomics (grip, weight).
For more versatility, opt for a variable speed machine: you do not drill all the materials at the same speed.
And in case of intensive use, it can be interesting to get a drill sharpener.
Hammer drill
The hammer drill is the first machine to acquire. It allows you to make the most common holes in most materials.
perforator
The drill is intended for heavy masonry work. More powerful than the drill, it allows to drill deeply with great ease.
Drill press
The drill press is ideal for drilling metal or for assembling wood (mortises, dowels...). The work is precise, easy and effortless.
FAQ - 💬
❓ What are the different piercing tools?
👉 Piercing tools are basically the devices needed to do the piercing on the desired body part like ears, lips or nose. There are various piercing tools like ring opening pliers, piercing calipers, piercing needles, threading tools ptfe threading and piercing aftercare items which makes body piercing a smooth and hassle free process.
❓ What gauges should be used for piercings?
👉 Your piercing jewelry has a standard gauge size that would be perfect for your body. Contrary to what you may think, the lower the gauge size, the thicker the jewelry bar. For example, a barbell of 10 gauges is much thicker than the 20 gauges.
❓ Is the piercing tool as good as new?
👉 The most important thing to remember is to use the piercing tool for its exact purpose. The tool will only be as good as new as long as it is dealt with proper care and not mishandled.
❓ What size of jewelry do I need for my piercing?
👉 Check out the average or standard sizes for all the above jewelry types. Flatback and Barbell jewelry types that are mostly used for earlobes, helix, conches, and tragus piercing have 6mm to 6.5mm in length. The gauge for earlobes jewelry would be 20, 22 and for helix, conches, and tragus it would be 16, 18.