A circular saw is a useful tool that can be found not only in professional workshops but also in the home. There are a variety of circular saws available in different sizes, which can cut a large number of materials such as wood, metal, plastic, masonry, asphalt or floor coverings.
The cutting element of the circular saws consists of circular blades or blades constructed of various materials and available in a wide range of sizes and types of toothing affecting a particular choice. The price of circular saw blades varies enormously, and many of the more expensive products have features that give them longer life and better performance. Economical blades can quickly lose the edge but are ideal for those who use them sporadically.
For this reason, it is essential to choose the right blade for a particular circular saw model. In this article, we will detail the main parameters that we must take into account to choose a circular saw blade.
As always happens when making a purchase, we must first ask ourselves a series of questions that can serve as a guide. For example:
1) What kind of material are we going to cut and what is its thickness? Is it wood? And in that case, softwood, hardwood, agglomerates, laminates or plywood? Is it plaster, plastic, granite, concrete or non-ferrous materials? It is important to know that the saw blades are constructed of different materials and have been designed according to what they are going to cut, even if the work surface has nails and screws in the direction of the cut.
2) What type of machine do we have to make the cut? A stationary table saw (ex. www.thesawcritic.com)? A miter saw? A portable wired or wireless saw? Some saw blades are designed to be used exclusively on a particular type of saw, so ignoring this detail can produce poor results and can even become dangerous.
3) What kind of cut do we want to make and what degree of finish do we want to achieve? For example, if it is wood, do we want to cut in the direction of the grain (longitudinal) or in the transverse direction to the grain? Or do we prefer to make a dry or wet cut? Again, the availability of saw blades for each of these functions is vast and the finishes vary between regular, good and excellent, where it is always a question of avoiding the splintering of wood and the formation of burrs in other materials.
In previous articles, we provide a series of guidance tables on the type of abrasive discs to be used depending on the material and the type of machine to be used. A large part of this reasoning also applies to the circular saw blades that are dealt with in this article.
The fundamental difference between the abrasive discs described in those articles and the saw blades lies in their construction. The saw blades are integrally metallic pieces provided, almost always, with teeth.