Circular saws buyer's guide
If you need to cut a lot of straight boards then you probably need a circular saw. These heavy-duty power tools are designed to cut straight lines in timber, man-made boards and stone with the right blades. They offer a major power advantage over jigsaws but are limited to straight lines - though most offer an adjustable base plate to make angled cuts.
Saws comes in various sizes with blade diameters between 150mm and 185mm. This also gives a maximum cutting depth, which will be anything up to around 65mm.
To provide a smooth cut, most circular saws offer a high power rating, starting at around 1000w and going up to 1500w. This helps maintain a high RPM for the cutting blade.
Adjustable base plate
A good circular saw will provide an adjustable base plate. This will enable it to be angled between 0 and 45 degrees and also enable you to adjust the cutting depth.
Most base plates will be marked with parallel lines but your circular saw should come with a rip guide that will help you cut a straight line.
Various replacement blades are available and tungsten carbide tipped versions will last longer and cut faster than plain steel ones. For masonry work cutting discs are required.
Circular saws features & videos
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