When we begin with our woodworking hobby we are aware that the DIY electrical tools we are going to use can be dangerous.
3 videos in this article.
By looking at the teeth and the speed at which the blades, discs and bits of the woodworking tools move, we already know that we should keep our hands away. But with some woodworking tools there are dangers that we are not aware of until they are explained to us, or in the worst case until those dangers manifest themselves in a totally unforeseen way.
I am not an expert on the subject, and I probably worked inadequately many times, but at least I hope to be able to explain in a basic way some of these dangers so that those who do not know about them know that they should be well informed about them.
One of the major hazards of our woodworking tools is related to the kickback of the circular saw. This occurs when the back of the circular saw blade bites into the wood or is pressed into the slot that the blade is cutting, so that the force that the motor makes to rotate the blade while cutting the wood is transformed into a backward jump of the circular saw. The most basic thing to try to prevent this kickback from happening is to avoid cutting green or wet wood that may have tensions that cause the slot we are cutting to close behind the circular saw blade. We should also keep the circular saw disc clean and if possible use a circular saw that has a riving knife behind the blade.
Note that this can also occur on the table saw. Special care must be taken if no riving knife is installed behind the cutting disc:
As I said I am not an expert, so I better leave you with the videos where I try to explain how circular saw kickback happens and how I try to work with some of my woodworking jigs in a way that I think keeps me safe. In any case, the best thing you can do is to look for information on the subject, if possible from professionals.