The saw blade is quite hot even after cutting; you can easily get burned if you just tap it with your hand for a second when trying to unmount it off the circular saw. With many blade designs, the ends of the expansion slots are connected to holes in the center of a saw blade, positioned towards the arbor. The expansion slots help with this, acting much like small fan blades to force the air to move.
On a hand saw it is much less, the blade is wider by about the height of saw tooth in the center of the blade. Used to improve saw blade performance by stiffening the saw blade plate and dampening sound and vibration caused by the saw’s belt, motor, and bearings. The kerf on a carbide tipped saw blade acts as the set in the blade giving it the clearance it needs to cut through the material.
If you want to know which blade to use for a specific project or are just looking for an overview of the types of blades that exist, here we have all the information you need about circular saw blade types. One of the most obvious features of any circular saw blade that will be immediately recognizable even to someone who has never used a circular saw in their life is the number of teeth. They are a good choice if you need one blade for a variety of uses, but if you need a blade for a more specific job, you’re better off buying a specialist blade for that application.
circular saw blade expansion slots Related Question:
What are the slots in a circular saw blade?
The basic function of the expansion slots, which are used primarily on larger diameter blades is to create an outlet for heat buildup created during cutting. For example, imagine a 10″ piece of steel with 60 or 80 carbide teeth turning at a speed of 6,000 RPM entering a piece of hard wood such as oak.
Do all circular saw blades fit all saws?
Circular saw blades are designed for use with miter saws, table saws, radial arm saws, cut-off saws and standard circular saws. Many circular blades can be used interchangeably between devices.
Is it better to have more teeth on a saw blade?
In general, blades with more teeth yield a smoother cut, and blades with fewer teeth remove material faster. A 10″ blade designed for ripping lumber, for example, usually has as few as 24 teeth and is designed to quickly remove material along the length of the grain.
What are the 3 basic types of circular saw blades?
They are: Rip Blades, Crosscut, Combination and Specialty blades. Ripping saw blades are designed primarily to achieve a smooth, clean and safe cut when ripping wood or cutting in the same direction as the wood grain.
What is disc bore size?
The bore measurement means the size of the hole in the saw blade, this should match the boss/spigot on the saw clamping collars on your machine. If your m/c has a smaller diameter fitting it may be possible to adapt by fitting the adaptor washers supplied with the blades.
What does TCT mean on saw blades?
Tungsten Carbide Tips. TCT saw blades are specifically designed for cutting metal tubing, pipes, rails, nickel, zirconium, cobalt and titanium-based metal. All of this is possible thanks to the teeth on the saw blades, and the tungsten carbide tips, or TCT.
Can I put a metal cutting blade on my circular saw?
Only blades and discs specified for cutting metal should be used. These professional circular saw blades are perfect for cutting through aluminium, copper, lead and other non-ferrous metals; while these diamond cutting discs will make light work of cutting through stainless steel.
How high above the workpiece should the saw blade extend?
The general rule of thumb is that the blade should be set so it is 1/8” above the workpiece. If you make contact with the blade with your hand at this height, you’re unlikely to lose a finger.
What is a ripping saw blade?
The best saw blade for ripping hardwood is a rip blade. This blade is specially made for cutting through wood fibers, so it will cut through hardwood easily and leave a clean edge. Rip blades usually have 10 to 40 flat-topped (FT) teeth, which is a comparatively small number, but it will move through the grain quickly.
Why does my circular saw burn the wood?
A dull blade will make it hard to cut quickly, and the slower the feed rate of the saw, the more friction against the wood and the greater the likelihood of scorch marks. Pushing the stock through the saw too slowly is a common cause of saw blade burn. Sometimes a blade that feels dull might only be dirty.
How many teeth should a circular saw plywood blade have?
Framing blades have 24 teeth and are effective for jobs such as rough carpentry, where speed is more important than getting a clean cut. Plywood blades have 100 or more fine teeth designed to create a finish with minimal splintering.
How many teeth do you need for plywood?
Cross-cutting wood or sawing plywood: Use a 40-tooth to 80-tooth blade.
Can I use a 7 inch blade in a 7 & a quarter inch circular saw?
The only fine-tooth blade you have lying around is a 7 ¼ inch size. The short answer to the above questions is that you can generally use a smaller blade in a circular saw – within reason. Of course, there will be some drawbacks and changes in performance, especially when you size down by a significant margin.
How deep can a 6 1 2 inch circular saw cut?
The 18V Brushless Lithium Ion 6-1/2 Inch Deep Cut Circular Saw (C18DBALQ4) is a revolutionary cordless circular saw utilizing a 6-1/2″ blade which allows a 2-19/32″ cutting depth, making it one of the deepest cutting cordless circular saws on the market. This circular saw has a similar cut capacity as a 7-1/4″ saw!
What type of blade is best for circular saw?
Mostly, a 24-tooth circular saw blade is preferred by many people, especially if you have to cross-cut lumber and sheet materials. The 24-tooth blade is good enough for you if the diameter is 7¼”. However, as the diameter increases, you should also consider looking for circular saw blades with more teeth.
