Chisel punch buying guide
Jeremy, construction site supervisor, Cardiff118 guides
- Typing Frequency
- Rotation speed
Chisel perforator: definition and usefulness?
These two drilling tools are similar in appearance and yet, drills and chisel punches are completely different both in their operation and in their capacities.
In chiselling mode, the chisel punch can overcome demolition projects such as removing tiles, making a hole in a wall, etc.
How does a chisel punch work?
Operating Modes of Chisel Punches
- Simple rotation: Equipped with a screwdriver or a drill bit, the chisel punch can be used like any conventional drill.
- Rotating perforator mode: The concrete drill rotates to remove debris while striking the drilling surface. Capable of drilling virtually any building material on large diameters, this is the essence of the chisel punch.
- Chisel mode: Here, the only percussion remains. Pointerolle or flat chisels, it chisels and can carry out demolition work. The magnitude is relative to the power of the tool.
Main Types of Chisel Punches
- Electromechanical chisel punches: For routine work, the percussion of these chisel punches is mechanically produced and their power rarely exceeds 10 joules. Simple to handle and lighter, these perforators are intended primarily for the general public.
Chisel perforator: wired or battery operated?
Wire Chisel Punch
- As long as you pay your electricity bill or have fuel in the electric generator, you can perforate and chisel as much as you like! More powerful than battery-powered chisel punches, wired chisel punches are designed to perform well with heavy-duty materials such as reinforced concrete or stone. Suitable for intensive use, these chisel punches are also ideal for demolition sites. As a trade-off, you are limited in your mobility and you will have to invest in an extension cord if you need to work outdoors.
Cordless Chisel Punch
- Ideal for small spaces or where there is no juice. The main disadvantage is that the power of these chisel punches is limited (less than 3 joules), as is its ability to pierce hard and resistant materials. Cordless chisel punches are not suitable for demolition, even short and small scale ones. However, some high-end professional chisels have features very similar to the wired models.
However, some high-end professional chippers have features very similar to wired models.
What are the characteristics for choosing a chisel punch?
- The power and striking force of the chisel punch
Power, expressed in joules (J), is the main criterion. The power will define the efficiency and performance of your chisel punch. The more joules, the harder it is. Considering that fact, for occasional use a power of 3 J is sufficient to overcome smaller tasks. For intensive use, demolition projects or other professional uses, you’ll need a chisel with power greater than 5 J.
- The striking frequency of the chisel
The striking frequency expresses the number of impacts per minute. This characteristic is useful to know when choosing, particularly with regard to the chipping mode.
- The speed of rotation
The speed of rotation is an important feature because it will determine the capacity of the chisel punch to pierce a material. Generally, lower than that of a conventional drill, the speed of rotation should ideally be between 300 and 1000 rpm.
- Function and mode of the chisel punch
It is important to carefully target your needs as all chisel punches do not necessarily have the three rotation-perforation-chisel modes of operation. Whether you do or do not plan to demolish, think about your possible need for a chisel. Perforator boxes offer assortments of drills, chisels, pointers and gouges of various qualities.
- Chuck type in chisel punches
The chisel punching machines are equipped with special keyless chucks and are divided into two main types: the SDS and the SDS Max. The special feature of these chucks is to engage the drill directly without screwing or wrench, a little grease on the tail of the drill bit and it should click in place. The SDS is the most widespread. It equips the majority of chisel punches and it is easy to find drills, chisels and pointers. The maximum drilling diameter is 30 mm. The SDS Max is reserved for heavy-duty professional chisel punches, accessories are rarer and therefore more expensive. The drilling diameter can be up to 52 mm.
- Battery type in chisel punches
If you opt for a cordless chisel punch, you will be able to choose between several types of batteries. Voltages vary but can be found at up to 36 volts (V) for professional tooling. To choose, it is necessary to look at the voltage and the intensity of the battery. The higher these values, the more you can work at full power and over a long period. The Amperes/hour (Ah) directly affect the battery life. Realistically, setting aside any professional pretensions, any DIYer should find 18 V-4 Ah sufficient. As for the components of the battery, you have the choice between three materials, although the first and the third are more or less representative on chisel punches.
- Ni-cd is nickel cadmium, it is the old generation par excellence! The battery is heavy, can often take a long time to recharge, and has a memory effect.
- Lithium-Ion is the must! The battery is light, recharges quickly and has no memory effect. Only downside, its price.
- Ni-Mh or nickel metal hydride. Behind this barbarous name lies a battery that is heavy enough and with little memory effect. They age badly, and are less widespread.
- Comfort while using a chisel punch
Even at work, comfort is important! A chisel punch is heavy to handle, it vibrates, and it makes noise. If you hesitate between several models, give special consideration to those that are lighter and less noisy. Some high-end chisel punches offer an anti-vibration system, for example, or a device that attenuates noise.
What are the accessories for a chisel punch?
- Drill bits and drill bit SDS
- Punches, a kind of chisel with a pointed end, intended for chiselling
- Chisels, adaptable to work, several widths and lengths are available
- Gouges, to give a curved shape
- Interchangeable chucks, to switch from SDS to a self- tightening chuck. A useful option for using drill bits and drills with smooth shanks.
Chisel punch: useful features and options
Have you found the chisel punch of your dreams? Not yet? So, there are still a few tips for choosing your chisel punch!
- The Disengagement: Indispensable on a chisel punch; The clutch disengages the chuck in the event of blockage of the drill bit. This avoids accidents and keeps the motor from over-heating.
- The Depth Gauge: Adjusts and accurately determines the depth of the drilling in progress.
- Built-in Lighting: This option provides additional lighting on the screw-on tip or drill bit. Ideal for dark or cramped areas.
A final piece of advice for choosing a chisel punch
When working with your chisel punch, you should always have protective eyewear, gloves, and goggles regardless of your job site.
If you are working on a prolonged task, anti-noise barriers or ear plugs are always welcome.
If you do demolition, a safety helmet and safety shoes can avoid many accidents.
Think about the weight, as well. 500 grammes more or less held at arm’s length and after one hour of use can make all the difference!
For do-it-yourselfers who are curious about know-how and want to choose the accessories related to drills, follow the advice of our editors and discover their Guides:
- How to drill a wall
- How to drill glass
- How to drill tiles
- How to choose your drill bits
- How to choose your rawlplugs
- How to choose screwdriver bits
- How to choose the battery of its power tools
- How to choose your battery charger for power tool
- How to choose your electric screwdriver
- How to choose a drill
- How to choose a drill on a column
Jeremy, construction site supervisor, Cardiff 118 guides écrits
Electrician by trade, I first worked in industrial estates where I installed, wired and fixed a large number of electrical installations. After this, I managed a team of electricians for this type of work. 10 years or so ago, I turned to building and construction. From the modest family home, to gyms and theatres; I have been able to coordinate, audit and organise all sorts of construction sites.
for 4 years now, I am restaoring and bulding an extrension to a bungalow in the heart of the welsh countyside. My experience in manual work and my knowledge means I am proud to be of service. Terraces, interior design, roofing, plumbing, electricty, anything goes! We have, my wife, daughter and I, built almost everything we have from scratch! So to answer all of your questions, and to orientate and advise you on coosing your tools? Easy!
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