The Indirect Circular Saw:
These come as Worm-Drive and Hypoid saws. Don’t let the “indirect” descriptor here be misleading… these are powerful saws. “Worm” and “Hypoid” are just the terms used to describe the gears used in these. This is a specialized circular saw for heavy-duty cutting. It’s generally used in framing, roofing, and other carpentry. Usually, these saws are heavier, larger, and provide more torque to help cut through denser woods and handle the tough demands of a work site.
The Direct Drive Circular Saw:
This is a more compact best circular saw than the typical worm-drive saw. As the name suggests, the cutting blade is directly attached to the motor. These can be very powerful, but this is also the type of design used in some under powered and cheaply manufactured saws. click here for related details.
Circular Saw Features to Know About:
There’s so much variety in circular saw designs and engineering that no category of hand-held circular saw can claim to be the heaviest or lightest. While generally speaking, direct drive circular saws are lighter than hypoid and worm drive saws, there are certainly direct-drive saws that are heavier. Most budget saws will use a somewhat heavier formed steel base plate/shoe and blade guards. Lighter saws use cast aluminum or magnesium alloys for their base plate and blade guards. for further info, click on : http://apps.leg.wa.gov/wac/default.aspx?cite=296-807-12005
– Power & Amps:
Most circular saws will advertise their power in amps. The most common rating is 15 amps. Some are rated at 14, amps, 13 amps, 12, amps, 10 amps, and lower. However, more isn’t always better. The amount of power the motor of the saw uses doesn’t always translate to more power at the actual cutting blade. The design of the motor’s inner-workings plays a role.
– Oh, and what about cordless circular saws?
The size and power of the battery is the thing to consider for these. You’ll see these rated in volts, with 18-volt and 20-volt saws (saws designed to work with 20-volt batteries) being very common in budget and mid-level saws. The volt rating is something that can be used as part of comparing different saws, but shouldn’t be the only aspect considered.
– Depth and Cutting Angle Adjustment:
Some saws can cut thicker materials than others. Also, some can cut at greater angles than others. Among best circular saws that use the most common sized blades (7 1/4″), the depth of cut limit doesn’t vary greatly. However, even an additional 1/8″ cutting depth can make a big difference in some applications.
– Motor Brake:
This is exactly what it sounds like. Once you release the power trigger, a brake engages that stops the motor from turning in about 2 seconds. It increases the safety of a saw, though all circular saws have a lower guard that also helps protect a person and work surfaces from the spinning blade when the saw is not actually being used to make cuts.
– Anti-Snag Lower Blade Guard:
All common hand-held circular saws will have a lower blade guard that moves during cuts, but some may snag on the edge of materials being cut. An anti-snag lower guard is becoming the standard, but some saws may still have trouble with snagging during beveled cuts. A lower guard that snags on the edge of a board can be dangerous.