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DeWalt DCS578 vs. Dremel US40-04

Considering a new circular saw? Compare the benefits of the DeWalt DCS578 and Dremel US40-04 in order to make an informed purchase!

Well take a look at these two circular saws: the DeWalt DCS578 and the Dremel US40-04.

DeWalt DCS578
Dremel US40-04

Features & Benefits

For more information, read more in our roundup of the best compact circular saws and the best full-size circular saws.

Power & Motor

The US40-04 is corded, requires 120 V, and draws 7.5 amps. In the U.S., standard residential circuits are 120 V, 15 A, which will support the.

The DCS578 is cordless and runs on 60 V batteries.

The DCS578 has a motor that spins at 5800 rpm and the US40-04 has a motor that spins at 13000 rpm. But you shouldnt get too caught up in the RPM numbers, since the manufacturers test them under ideal conditions, and they dont have a direct correlation with the saws real-world ability to handle various types of material.

Both saws have a direct-drive motor. Direct-drive motors are usually lighter than other styles, but their side mounting makes the saw a little harder to control.

Blades & Capacity

The DCS578 accepts 7 1/4 diameter blades and has a 5/8 arbor. The US40-04 takes 4 diameter saw blades. Most 8-to-10blades have a 5/8arbor hole, so this size of arbor wont limit your choices.

The DCS578 can bevel its blade up to 57°, can cut up to 2 9/16 at 90°, and will cut up to 2 deep at a 45° angle. The US40-04 can bevel the blade up to 0° and is able to cut up to 3/4 at an angle of 90°.

When beveling the saw, most circular saws will have positive stops at common angles such as 45° and 90°. This ensures you are making precise cuts. Some saws have additional stops at other angles.

The DeWalt has stops at 22.5°, 45°.

The DeWalt has the blade on the right side of the saw. The Dremel has the blade on the left side of the unit. Right-handers sometimes find it easier to see and control blades mounted to the left, while left-handers might find the same true for right-mounted blades.

Pros & Cons

Lets take a look at some of the pluses and minuses of these products.

For the DeWalt:

Pros

  • Power and torque comparable to a corded saw
  • Brake responds quickly to stop saw almost immediately
  • Deeper cuts than most other 7 1/4” cordless circular saws
  • Handle design is very comfortable to use and makes it easy to push straight

Cons

  • Heavier than many other saws in its class
  • Shoe friction requires a little more energy to push

For the US40-04:

Pros

  • Optional auxiliary handle for extra control
  • Includes multiple blades for wood, metal, PVC, etc.
  • Can make flush cuts with appropriate blade

Cons

  • Can overheat when cutting thick material

Comparison Chart

Below is a full side-by-side look at these productsspecs. You can view comparisons of the DeWalt DCS578 with other products

and comparisons of the Dremel US40-04 with other products.

DeWalt DCS578Dremel US40-04
DeWalt DCS578
Dremel US40-04
BrandDeWaltDremel
Power Typecordlesscorded
Power - Voltage60 V120 V
Power - Ampsn/a7.5 A
No-load RPM5800 rpm13000 rpm
Blade Diameter7 1/4”4”
Maximum Bevel57°
Depth of Cut (at 90°)2 9/16”3/4”
Depth of Cut (at 45°)2”n/a
Arbor Size5/8”n/a
Dimensions13” L × 5” H
Weight8.2 lbs4.6 lbs
Blade - Siderightleft
Drive Mechanismdirect-drivedirect-drive
Stops22.5°, 45°n/a
Warranty2 years
Pros
  • Power and torque comparable to a corded saw
  • Brake responds quickly to stop saw almost immediately
  • Deeper cuts than most other 7 1/4” cordless circular saws
  • Handle design is very comfortable to use and makes it easy to push straight
  • Optional auxiliary handle for extra control
  • Includes multiple blades for wood, metal, PVC, etc.
  • Can make flush cuts with appropriate blade
Cons
  • Heavier than many other saws in its class
  • Shoe friction requires a little more energy to push
  • Can overheat when cutting thick material
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