Are you fascinated by the efficiency of circular saws and have you decided to add such a product to your list of tools? Remember that it is a powerful device, which is important to maintain correctly and to use it properly, in order to avoid accidents and to be able to obtain precise and clean cuts.
Circular saws are a special category of automatic cutting devices, provided with a round blade, with serrated edges, which is set in motion at high speed by a motor. Teeth cut efficiently through wood, plastic or metal, this device being extremely useful in the household and in craft workshops.
The device includes a button that allows quick start and stop, guards that eliminate the risk of touching the blade during cutting and various options for adjusting the working mode, available depending on the chosen model. If you want to buy such a tool or you have already purchased one and you are familiar with it, it is good to know some basic aspects regarding its operation and maintenance.
Mode of operation
Unlike chain saws, these models cut with the help of sharp teeth that edge a round blade, in a continuous rotating motion, or with the help of an abrasive surface. The cut obtained has a narrow profile and quite smooth edges, without very visible unevenness, largely due to the high cutting speed. But you will notice small traces that you can easily remove with the help of an emery.
It is an appreciated tool because it allows precise and clean sectioning, being one of the most used cutting tools in the construction of wooden houses, carpentry, etc.
How to cut correctly with a circular saw
To get the best results it is good to know a few little tricks to use. First of all, always place the material with the right side down. Because splinters and roughness are usually created when the teeth penetrate metal, wood or plastic, the good face will remain with a fine and clean cut.
Always carefully determine the cutting thickness you need. At the level of the sectioning device, this detail materializes in that part of the teeth that comes out of the base of the saw.
In order to cut easily and with as few marks as possible, always section on the natural line of the material (if it is wood, the visible fiber follows). The transition is cleaner and more efficient if you turn on the device and bring it to maximum speed before entering the work surface. It is equally important to move forward with a medium and uniform force, without abruptly or slowing down, in order to obtain a cut that is as straight and correct as possible.
Because it is a device that cuts even metal, its use must always be done with care and storage involves placing it in a closet or on a shelf where the little ones cannot reach.
The most common injuries caused by the use of such a device are accidental cuts, which most often involve haste and carelessness, or damage or even lack of blade protection element, and the penetration of foreign objects into the eyes.
During cutting, it can happen that the teeth of the blade take chips from the material they are passing through and project them towards you. This is the reason why you should not use this device unless you are equipped with goggles.
It is equally important to add a pair of soundproof headphones, especially if the model you choose generates over 80dB and you work in a small space, for more than 1-2 hours.
When working with materials that do not need additional support for stability during cutting, it is advisable to use both hands to hold the saw. The reality is that most circular saw models are powerful devices that can cause serious accidents if dropped to your own body, and holding them with both hands provides more safety.
In addition, this approach gives you even more balance and stability when working on length, allowing the right cut over a longer distance.
There will be cases in which you will have to cut light plywood or plastic boards that will not stay fixed on the work table. The best way to achieve a precise and clean cut is to use vices to stabilize the material on the support surface and to be able to work without worries.
Never use this type of equipment when you are under the influence of alcohol, sick, tired, if you have vision problems, balance or feel weak in the hands.
Always check the saw before working with it. Make sure that the on / off button reacts quickly, that the blade is clean and the power cord is intact.
How to use the circular without a workbench
Unfortunately, the alternatives available in the absence of a workbench are not very good. First of all, in no case try to cut a piece of wood or sheet holding it with one hand, while with the other you handle the circular. It’s a sure recipe for disaster.
If you do not have a table, improvise a secure fastening system, so that the work surface is stable and you can handle the saw with both hands and safely.
The recoil effect
Every time your teeth hit the material you cut, the device has a small recoil that you will feel more or less, depending on how well you know how to adjust the saw. The recoil tires the arm, spoils your concentration and, most of the time, means a higher risk of cutting crookedly or with more visible marks left by teeth.
You can prevent an annoying recoil by taking care to always set the cutting depth correctly, to work straight and balanced and to periodically remove the residues left on the work surface after cutting.