The circular saw is a must have for any wood worker that is looking to make rip cuts, cross cuts, or both.
The term circular refers to the blade that is mounted in this tool and can be interchanged for a variety of different saw blades depending on the type of material that you need to cut through.
Some people consider the table saw a type of circular saw, but in this instance I will be referring to the hand held saw that is also know as the skilsaw.
How To Avoid Tearout With a Circular Saw
If you are looking to NOT destroy your perfectly good piece of wood with tear out then you need to remember this. A circular saw cuts upwards. Once you know that, you will then know that to prevent tearout or ragged edges, you are going to need to put the good side of your work face down. This will cure that pesky tearout problem 100% of the time, unless your saw is crap.
Do I need to clean my circular saw blade?
Yes! Of course you do. If you are cutting through wood, you are going to get resin on your blade. This will cause it to bind while you are cutting. A blade that bind in a piece of work will cause burn marks on your cut. That is pretty bad but it can also cause kickback from your circular saw. That is one of the more dangerous occourences in any wood shop and if that blade hits you in the femoral artery (inner thigh), you are probably going to bleed to death within a few minutes.
Cleaning your circular saw blade is going to make it last longer too. It is not going to rust, it not going to warp, it's just going to give you many years of faithful service.
Another circular saw cleaning tip is to remember to keep the case that the blade came in. Some manufacturers use one that is water tight on the bottom so you can easily use that to clean your blades. Also, if you are using a toothbrush to scrub the crap off them, don't use the wifes toothbrush!