Each and every good carpenter and DIY'er needs a solid, reliable circular saw in their tool collection.  The incredible usefulness of the circular saw makes it possible for it to execute an enormous diversity of tasks, rendering it amongst the most in-demand tools around most wood-working shops.  The flexibility to change the depth and angle of your cut makes lots of things possible. 
  
 You'll find 2 different typesof circular saws now available: in-line circular saws and worm-drive circular saws.  The big difference between them is the positioning of the motor, which considerably affects the amount of torque provided.  With a worm-drive saw, the motor is mounted parallel to the blade.  This configuration enables the motor to transfer a large amount of power to the blade, allowing it to cut through a variety of materials, from wood to concrete.  In general, most pro craftsmen use worm-drive saws on account of the increased power and flexibility.  Nevertheless, the increased torque and power also makes them a lot more dangerous than in-line saws.  Because of this, it is my opinion that worm-drive saws should really only be used by professionals.  Read some more information on this here: 
 [http://circular-saw-reviews.info/circular-saw-safety/ her latest blog]
 
 For typical DIY work, an in-line (or sidewinder) saw is a very good option.  Despite the fact that they offer less power than a worm-drive saw, most in-line saws should have no problem handling nearly any project you'll be able to give it, other than serious industrial construction.  Additionally, they are just plain lighter, easier to use and safe.  Check to be sure the circular saw you get has an electronic brake.  This feature causes the flow of electricity to be reversed once you let go of the trigger, causing the blade to stop promptly.  This is a vital and valuable safety feature. 
 
 If portability is necessary to you, you might want to look at a cordless circular saw.  This will allow you to use them almost anywhere, without needing to haul around a generator and long extension cords.  There are a few disadvantages to portable circular saws: they have less torque, and you will be limited by the battery packs runtime.  You could get more batteries to broaden the time you can work, though you need to remember to have them all completely charged and ready to go, which can be an inconvenience.
 
 Be sure to consider the kind of work you will be carrying out before purchasing any power tool.  This is particularly the truth with circular saws.  If you find that you switch blades fairly regularly, finding a saw with a quick-change blade system could save you a lot of time in the future.  If you'd like deep cuts, you will need a saw with a blade size big enough to meet your demands.  Also, you'll want to read some circular saw reviews before making your purchase to be sure you purchase the best circular saw for your needs.
 
 As I mentioned before, every craftsmen and hobby wood-worker needs a solid, safe circular saw in their tool collection.  The amazing flexibility of the circular saw allows it to execute an awesome variety of jobs, that makes it amongst the most in-demand tools in most woodworking shops.  The capacity to set the depth and angle of your cut opens up the door to several possibilities.
 

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