Hi, Circular saws are dangerous beasts but, handled carefully are easy to use. The most important thing is to check that the blade guard is in place and you have a guide to run the edge of the saw along. This will ensure your cut is dead straight and you will not waste timber.
The depth of a diamond blade can be altered by loosening the sole plate (the metal with slides along the timber you are cutting) and lowering it. This has the effect of raising the blade. Remember to tighten fully when the blade is set at the required depth. To obtain the best results the blade should be set approximately 6mm (quarter of an inch) deeper than the depth of the timber. As with most power tools, a circular saw with a wattage of less than 500W is a waste of time and will burn out very quickly under load. 750W is as low as we would like to go, but ideally wattage of 1500 - 1750 is used. Timber can bind blades easily and a low wattage motor will not be able to cope. Ripping blade for rough cuts along the grain on a good circular saw, at the back of the blade, is something that looks like a rudder. This is called a riving blade and it is there to stop the timber closing on the blade as you cut through. Thanks.
