A circular saw is an excellent tool and just about the most common tools inside the workshop. It had been invented in England way back in 1780. The circular saw is also called a buzz saw or commonly referred to as Hvac machine, though Skil is actually a manufacturer that makes circular saws. With the right blade, a circular saw can do cutting wood, steel, masonry and ceramic tile. Circular saws are available in various sizes starting from 3″ to 16″. The most common corded dimensions are 7 1/4″ and cordless is 5 3/8″ & 6 1/2″. There are 2 forms of circular saws: IN-Line Saws and Worm Drive Saws.
In-Line Saw – These are the basic most common kinds of circular saws and are generally the most affordable. Moreover, they don’t weigh up to the Worm Drive saws. An In-line saw’s motor sits perpendicular towards the blade plus a shaft runs straight from the motor to operate the blade. An In-Line saw will suit much of your applications, and apart from changing the blades, they may be easy to maintain.
Worm Drive Saw – A worm drive is for high quality use and is likely to cost a tad bit more compared to In-Line saws. A worm drive motor is positioned parallel using the blade and relies on a gear to boost the torque moved to the blade. These are usually a bit heavier compared to the in-line models. Also, worm saws usually are not easy to maintain, you have got to occasionally add a special oil to the motor, which is nothing but unscrewing a screw and adding the oil, it is quite easy.
Electric Brakes – This is certainly one feature I would personally get, no questions asked. An electrical brake stops the motor in approximately two seconds after releasing the trigger, while Hvac machine without having an electric brake will take about ten to fifteen seconds to prevent. The electrical brake functions by reversing the flow of electricity on the saw motor. The main reason to go with the electrical brake, which most models now offer, is to save limbs and fingers. After you are cutting for quite a while your arm will 90deyypky to acquire tired, so you want to be sure your safe at all times. Stopping the blade quicker means less likelihood of getting hurt.
Blade Capacity – As noted above circular saws come in different blade sizes. When you are purchasing a corded model I would go with a 7 1/4″ and then for cordless, go along with a 6 1/2″. The greater blade models are heavier, but in the end you will have to make less cuts, especially on angle cuts.
Shaft Locks – Make certain your saw has a lock. A Shaft lock is generally a button you press that holds the blade still, making changing the blade easier. If your buying Cutting blade, it must have this feature. The cheaper models usually do not have this feature.
A saw blade is probably the most critical parts to a circular saw. Not only finding the right blade is very important, but also having a sharp blade is important. There are various blades for different jobs and here we cover the common uses. If you wish a more in depth explanation on saw blades please follow this link – Blades.