Tool School: the Omnipotent Circular Saw
The large circular saw blade and loud noise can scare a newcomer to the household, but don’t let that scare you away from one of the most useful power tools in any workshop.
The circular saw is the most common power tool. You will see it on every construction site as it has a wide variety of uses. Many home renovation and construction projects will also benefit from having a circular saw. A good quality circular saw will quickly tackle any kind of wood, from sawing plywood sheets to 2×4 cutting.
Wired vs wireless
Circular saws, like most other power tools, are corded and cordless . There was no controversy a few years ago as cordless circular saws could not provide the power, blade speed and run times required on construction sites. However, cordless technology is advancing rapidly and the advent of brushless motors has made several cordless circular saws popular .
For the homeowner, cost is a major consideration. For $ 100, you can walk out the door with a good quality RIDGID circular saw with wire . Its 15 amp motor will power you in any situation and comes with a lifetime warranty. A comparable cordless DeWALT with battery and charger, but with a smaller blade (6 ½ “) will cost $ 263. If mobility is not a top priority, network connectivity can save a bit.
Sidewinder vs. Worm
Circular saws fall into two main categories: Sidewinders (with the direct drive shown above) and worm drives. On the side winder, the motor sits directly next to the blade making it small, lightweight and ideal for household tasks. Worm-driven saws generate more torque with a powerful helical transmission, which transfers power more efficiently to the blade since the motor is behind the blade.
Carpenter Robert Robillard states: “Worm-driven saws are unmatched in their line of sight and blade visibility (left-handed blade for right-handed people), as well as their great power. Today’s worm drives are lighter due to magnesium materials. Many carpenters who do rafter and ladder work will have a worm drive and side winder for opposite bevels. I personally own both, and if I make multiple cuts I use the lighter side wrapper. If I’m working on framing, it’s a worm drive. “
Worm -driven saws like this SKILSAW are more expensive than similar side winders , but the extra torque and weight can help drive through tougher materials.
The alternative to these styles of circular saws are compact pruning saws. They are available with or without wires and can provide enough cutting power for household chores. They are much lighter and easier to maneuver in tight spaces. Rockwell and Dremel produce saws with good reviews.
Before buying a saw, make sure you have it in your hands. Pay attention to the weight, balance and size of the handle. Take a bunch of different saws, and you will understand which one is more convenient than others. If you are using a battery, try keeping it with the battery connected, as this will significantly alter weight and balance.
As with any power tool, safety comes first. Always wear appropriate eye protection and carefully read the safety manual that came with your saw. Norm Abram of This Old House offers these great tips for setting up your circular saw and how to make cross cuts and cuts (sawing with grain) correctly.