Unplug the saw or remove its battery when changing blades and when not in use. Avoid dangerous kickback. Always use sharp blades that are intended for the material to be cut and follow the blade manufacturer's guidelines.
Always unplug the saw to make adjustments or to change blades. 11. Always use sharp blades and keep the blade guard functional.
Cleaning is one of the keys to circular saw maintenance. After using the tool, you should wipe the housing down with a damp cloth and make sure the air vents are clean. Along with that, you should also learn how to safely clean circular saw blades.
Always wear eye protection when operating a circular saw. Wear a dust mask and ear protection if the situation calls for it. Avoid loose clothing, hair or jewelry that can be pulled into the saw. Stand to the side when cutting to avoid potential kickbacks.
There is a high risk of being struck by projectiles from the blade or material being cut. the blade is too low for the speed of the circular saw. keep upper and retracting lower blade guard clean and free of sawdust • do not hold or force the retracting lower guard in the open position.
Whether it's a blade for a reciprocating saw or a circular saw, you'll eventually need to replace it. But you should still strive to make your saw blades last. Oiling them, of course, will extend the life of your saw blades by protecting them from premature wear and tear.
Unfortunately, there's no set interval or indicator light that comes on when your circular saw blade is dull. Since variables such the way you use your saw, how often you use it and the quality of the original blade play a role in how long it lasts, it's up to you to make the determination.
When appearance matters, make cuts with the good side facing down, as circular saws can splinter the wood on the top side. Making your cut line on masking tape can reduce splintering. Start over if you see that you've veered off from the cut line instead of trying to curve your way back on track.
Overheating a saw blade can cause it to warp and result in a kickback. Buildup of sap on the blades, insufficient set, dullness and unguided cuts, can all cause an overheated blade and kickback. Never set a blade deeper than is required to cut the work piece 1/8 in. to 1/4 in.
Handle the saw firmly
And when you handle the circular saw, make sure that one of your fingers is on the saw trigger so you can release it at the moment the kickback occurs, and if you are using an electric circular saw with electric brakes, the circular saw will stop in just 2 seconds.
There are many 18-volt saws available, but there are also more powerful 20-volt cordless saws offered. As well as voltage, an amp-hour rating will also be listed, which indicates how long you can use the saw before the battery dies. The amp-hour ratings range from about 5 hours to 9 hours.
A Dull or Dirty Saw Blade Might Be the Culprit
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.
Apply and spray a generous coat of the WD-40® Smart Straw® onto your saw blade and spread it out evenly with a clean, dry cloth for that pristine look. 5A. Alternatively, you can soak the rusted parts in a large enough container with some WD-40 Specialist® Rust Remover Soak to dissolve away the rust.
A properly maintained cold saw blade should last a long time, even with extensive use. Circular cold saw blades can endure as many as 800 to 1,000 cuts before needing to be sharpened, and they can be sharpened up to 30 or 40 times during the lifespan of the blade.
There is no prescription for how often a saw goes dull or how often you should need to sharpen this or that saw. Truth is for most of us, in reality, is that we are more likely to sharpen less often than too often. The reason for this is that tools still cut surprisingly well when they are surprisingly dull.
To help the saw slide through the metal you should lubricate the saw blade. Particularly if you are cutting thicker sheet or detailed designs you may find the saw blade juddering or catching on the upstroke as you saw. Adding a little lubrication makes everything go a little more smoothly.
If you need to cut a large amount of lumber or plywood, or to break down lots of hardwood pieces to feed through a table saw, you're going to need a circular saw. Sure, there are alternatives like hand saws and jigsaws, but they don't come close in terms of efficiency and versatility.
“Fingers and hands are the most frequently injured body part and lacerations are the most common injury.
Accidents involving a circular saw are very common. Over the past few years, a study showed that 9 out of 85 traumatic upper limb injuries recorded over a 2-year period are caused by this tool.