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DEWALT DC390B 6-1/2-Inch 18-Volt Cordless Circular Saw (Tool Only)

4.5 4.5 out of 5 stars 1,682 ratings

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Brand DEWALT
Color Yellow
Blade Material High Speed Steel
Surface Recommendation Wood
Power Source Battery Powered

About this item

  • 3,700 RPM for fast rip cuts and cross cuts
  • 6-1/2-inch carbide tipped blade for 2x cutting capacity at 90 degrees and 45 degrees
  • High strength magnesium shoe and upper guard provides increased durability
  • 0-50 degrees bevel capacity provides additional capacity for a multitude of applications
  • Fan-cooled motor with replaceable brushes for maximum power and durability; tool only, no battery
See more product details

Customer ratings by feature

Light weight
4.5 4.5
Maneuverability
4.5 4.5
Ergonomic
4.4 4.4

Compare with similar items

This Item
DEWALT DC390B 6-1/2-Inch 18-Volt Cordless Circular Saw (Tool Only)
DEWALT DC390B 6-1/2-Inch 18-Volt Cordless Circular Saw (Tool Only)
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PriceCurrently unavailable.-40% $130.38
List:$219.00
-34% $97.89
List:$149.00
$220.00$292.90-7% $399.00
List:$429.00
Delivery
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it Apr 8 - 11
Get it Apr 2 - 4
Get it Mar 29 - Apr 2
Customer Ratings
Maneuverability
4.5
4.6
4.3
4.7
Ergonomic
4.4
4.5
4.2
4.8
Light weight
4.5
4.7
4.5
Accuracy
4.5
4.2
4.9
Sold By
Tool Liquidator LLC
TOOLS USA
B2smile
ARS ECOM Enterprises
Acme Tools
blade length
2 inches
2 inches
8 inches
6.5 inches
8 inches
2 inches
power source
Battery Powered
Battery Powered
Battery Powered
Battery Powered
Battery Powered
Battery Powered
speed
3700 rpm
4950 rpm
3200 rpm
3200 rpm
4000 rpm
blade material
High Speed Steel
High Speed Steel
High Speed Steel
High Speed Steel
Metal,Steel
High Speed Steel
number of teeth
24
24
24
24
24
60
included components
bare-tool
(1) DCS565 20V MAX* 6-1/2 in. Brushless Cordless Circular Saw; (1) DWA161218 Saw Blade; (1) Blade Change Wrench; (1) Optional Dust Chute
Tool Only
battery
bare-tool
1) DCS520 6-1/2" (165mm) TrackSaw, 1) Blade, 1) Blade change wrench.
cutting angle
90 degrees
50 degrees
90 degrees
50 degrees
90 degrees

From the manufacturer

DEWALT Bare-Tool DC390B 6-1/2-Inch 18-Volt Cordless Circular Saw

The DC390B 18V Cordless Circular Saw features 3,700 rpm for fast rip and cross cuts, carbide tip blade to maintain sharpness, and high strength magnesium shoe and upper guard for increased durability.

FEATURES

  • 3,700 RPM for fast rip cuts and cross cuts
  • 6-1/2" carbide tipped blade for 2x cutting capacity at 90° and 45°
  • High strength magnesium shoe and upper guard provides increased durability
  • 0-50° bevel capacity provides additional capacity for a multitude of applications
  • Fan-cooled motor with replaceable brushes for maximum power and durability

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Product information

Technical Details

Additional Information

Warranty & Support

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DEWALT

DEWALT DC390B 6-1/2-Inch 18-Volt Cordless Circular Saw (Tool Only)


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Product guides and documents

Product Description

Product Description

The DC390B 18V Cordless Circular Saw features 3,700 rpm for fast rip and cross cuts, carbide tip blade to maintain sharpness, and high strength magnesium shoe and upper guard for increased durability. Tool only, no battery included-battery sold separately. Compatiable with 18V batteries.

Amazon.com


Whether building wood decks or dormers, bookcases or kitchen cabinets, the professional-duty DEWALT DC390B 18-volt, 6-1/2-inch cordless circular saw delivers cordless convenience without sacrificing power or performance. An 18-volt battery (not included) drives the saw's 6-1/2-inch, thin-kerf blade at 3,700 RPM, an optimum speed for crosscutting and ripping construction lumber, softwood, hardwood, plywood, particleboard, oriented-strand board, and virtually any other sheet.



3,700 RPM for fast rip cuts and cross cuts
(view larger).

Power and Performance

With depth-of-cut capacities of 2-1/4-inch at 90-degrees and 1-5/8-inch at 45-degree (bevel), the DC390B can slice through all 2-by dimensional lumber. The 6-1/2-inch carbide tipped blade gives you 2x cutting capacity at 90 and 45 degrees, and the 0-50-dgree bevel capacity provides additional capacity for a multitude of applications.

A high strength magnesium shoe and upper guard provides increased durability, while a fan-cooled motor with replaceable brushes provides maximum power and durability. It's complemented by a vibration-dampening rubber-grip handle for comfortable handling on big jobs. This circular saw weighs 6.3 pounds.

Bare Tool

This DEWALT cordless tool does not come with a battery or charger. It's compatible with the DC9096 18-volt XRP battery pack and DW9117 15-minute charger.

Warranty

This DEWALT tool is backed by three-year limited warranty covering any defects due to faulty materials or workmanship (from the date of purchase). It's also covered by DEWALT's one-year free service contract, where DEWALT will maintain the tool and replace worn parts caused by normal use--for free.

What's in the Box

One DEWALT DC390B 18-volt 6-1/2-inch cordless circular saw, one carbide tipped blade, one blade wrench, and operating instructions (batteries and charger sold separately).


Important information

Bulb Voltage

18 volts

Customer reviews

4.5 out of 5 stars
4.5 out of 5
1,682 global ratings

Customers say

Customers like the quality, performance, weight and ease of use of the tools. For example, they mention it's well built, works well and is light. Some appreciate the cutting quality, value, and cord. Opinions are mixed on the battery life.

AI-generated from the text of customer reviews

224 customers mention224 positive0 negative

Customers are satisfied with the quality of the saw. They mention that it is well built, has good quality blades, and has stood up to years of use. They also appreciate the performance and solid base. Customers also say that it's a great framing and large construction saw.

"...The blade included is very good, and seems durable, even went through a couple nails without dulling noticably, but is a multi-purpose blade...." Read more

"...It's very handy if you want to make a quick cut. I've helped the neighbors with some simple one/two cut projects...." Read more

"...I was especially attracted to the solid base - magnesium, I think - and the blade on the left of the motor...." Read more

"...The kit box is very well made with extra slots for the rip fence and spare blade storage, which is a nice addition...." Read more

199 customers mention190 positive9 negative

Customers are satisfied with the performance of the saw. For example, they mention it works well for its purpose, runs beautifully, and is good enough to get the job done. Some are impressed with the power and weight of the tool. Overall, most are happy with their purchase and recommend it to others.

"...Power is surprising...." Read more

"...In summary, this is a great saw. It's light, powerful, cuts quickly, easy to use and very handy when a power outlet is not close." Read more

"...That's all I have and it works great. I don't think you need Li-Ion or even the XRP.**Comparison with the KIT model:..." Read more

"...Wow were they better than the craftsman. They were lighter, more powerful, and comfortable to hold. So now I knew Makita was better...." Read more

99 customers mention93 positive6 negative

Customers like the weight of the saw. For example, they say it's lightweight, powerful, and has decent battery life. That said, they mention it'll cut 2x4s on-site, and it'd be a great buy for portability.

"...In summary, this is a great saw. It's light, powerful, cuts quickly, easy to use and very handy when a power outlet is not close." Read more

"...The first few cuts literally made me smile. Quiet, precise, not unwieldy, easy to align, and the blade stops very quickly...." Read more

"...Wow were they better than the craftsman. They were lighter, more powerful, and comfortable to hold. So now I knew Makita was better...." Read more

"...First off, it's a lot lighter than my old P-C saw, and that makes it a lot less fatiguing to use, particularly when cutting overhead...." Read more

79 customers mention79 positive0 negative

Customers find the tool easy to use. They mention it's convenient, makes things a lot easier when doing a project, and is easy to adjust without tools. Changing the blade is straight forward and simple. The product is well-packaged and includes clearly written instructions. It's ergonomic and makes for very quick, easy small cuts when you don't want to lug out the larger saw.

"...Blade depth adjustments are quick and easily doe without tools, as are bevel adjustments, and the wrench to change blades is right on the tool...." Read more

"...It's light, powerful, cuts quickly, easy to use and very handy when a power outlet is not close." Read more

"...to a somewhat deeper start switch, then it felt very secure and comfortable...." Read more

"...They were lighter, more powerful, and comfortable to hold. So now I knew Makita was better. I bought the whole 18v lithium kit, loved it...." Read more

75 customers mention59 positive16 negative

Customers like the cutting quality of the tool. They say it cuts well, the blade cuts cleanly and accurately, and the tool does all the cutting they need. Customers also mention that it tracks well, and is quieter than they expected.

"...It really does all the cutting I need. On the rare occasion I run a battery out, I have another I switch to and put the 1st one on the charger...." Read more

"...It was (and still is) great for cutting plywood and other thin materials, but it can't cut deep enough to saw through 2x lumber, which is about half..." Read more

"...keeping the saw level at the end of a cut, but the blade cut line is also more visible without the motor housing in the way...." Read more

"...Oh, and as to the "Tool Only", it does include a fast cut blade. What a deal!!!" Read more

68 customers mention61 positive7 negative

Customers like the value of the tools. They say it's an excellent buy, with good quality and the price was good.

"...Very impressive. This is a great saw at a very reasonable price...." Read more

"...This is a handy and useful tool, and a deal at this price. Oh, and as to the "Tool Only", it does include a fast cut blade. What a deal!!!" Read more

"Good product for the price. I recognized that this was an older model with the older battery when I purchased...." Read more

"...Price was fantastic and I'm now finding bits of wood just to cut because this machine is so good. Well weighted and ergonomic. Thumbs up!!" Read more

36 customers mention33 positive3 negative

Customers appreciate the cordless capability of the saw. They say it's convenient to use and eliminates the need for cords. Customers also mention that the saw is portable and does not require cords to get in the way.

"...Other than that it has been a good tool to have. not lugging the cord around has been great...." Read more

"...Power. The most powerful cordless circ I have ever used. The first project I used it on involved a lot of cutting through MDF...." Read more

"...I was also surprised at how nice it is to work with a cordless say - without having to maneuver a cord through a crowded workspace...." Read more

"This has been a really nice cordless saw...." Read more

168 customers mention68 positive100 negative

Customers are mixed about the battery life of the tool. Some mention that it has good power and does not overly drain the battery when cutting. However, others say that it does not last too long, the first battery is getting weak, and the tool will drain the power quickly depending on the depth of cut.

"...It is still working but is getting tired. I replaced it with a new one this year 2018...." Read more

"...have two batteries like all other DeWalt owners out there, battery life is not a problem at all. here is why: Each battery takes 1 hour to charge...." Read more

"At the current time, cordless saws have noticeably less power than corded tools. The DeWalt DC390 is no exception to this...." Read more

"...It is there when you want it, and the battery has good life...." Read more

An Average Circular Saw, Satisfactory For Home Owner Use
3 Stars
An Average Circular Saw, Satisfactory For Home Owner Use
At the current time, cordless saws have noticeably less power than corded tools. The DeWalt DC390 is no exception to this. It will certainly cut 2" thick fir and pine lumber, but you won't get the same rate of production as with a corded saw.This saw has a thick base plate, which I like. Thinner stamped metal base plates on circular saws often get bent after several years of use and the saws never work well after this happens.A routine use of the DeWalt DC390 will be to cut thin stock such as plywood. It's handy to have a cordless tool for this purpose since you often have to extend your reach to make cuts. However, this saw is poorly balanced for such work. With the cut depth set shallow, the battery is raised high and the saw is top heavy. If you put the saw down as you would a normal circular saw, it will tip over. The lower half of the saw guard is made of a slightly flexible plastic. Given this saw is likely to tip off worktables frequently, I think this is better than having a metal guard which might get permanently bent. Plywood is often cut using a guide such as a bar of metal clamped to the work. It is difficult to cut with the DeWalt DC390 while keeping it snug to a guide because, in addition to the trigger, the saw has a safety that must be pressed with your thumb. It prevents you from wrapping your thumb around the handle, so you don't have a normal grip. (The DC390 also suffers from a weakness of all direct drive circular saws in that the motor leaves little clearance under it and tends to bump into any clamps that you use to hold the guide. It seems to me that manufacturers could do a better job of designing a motor housing that provided more clearance, even if only when the saw is set to do shallow cuts and motor is raised relatively high.)The locking knobs for the bevel and depth of cut are made of hard plastic. I find them comfortable to use.The saw uses a 6 1/2 inch diameter blade with a 5/8 inch arbor hole. The blade included with the saw has 16 teeth and is for rough carpentry. (It is easy to find a variety blades that fit this saw in hardware stores. Don't buy a blade with a 10 mm arbor by mistake.) The arbor bolt is reversed threaded and must be tightened with a hex key. The key is provided and it can be stored securely by pressing it into slots in the body of the saw.Like many cordless saws, this is a "left handed" saw, which has the blade mounted on the left side of the motor. For a right handed person, the consequences of a "left handed" saw are these: When you cut along a marked line, you will be able to see where the blade is cutting clearly because the motor won't be in the way. However, when you perform the typical operation of holding a board down with your left hand while you cut off the right end of the board, the wider part of the saw's base is resting on the wood that will bend and fall away. The saw also tends to tilt and fall away. You have to apply attention and force to keep the base of the saw level.This particular product offer ( DC390B, "tool only") does not include a battery for the saw or a charger. The saw's shipping weight is listed as 8 lbs ( about the weight of a plastic gallon jug of water) and, to me, this feels correct for the weight of the tool. Attaching a battery adds weight. At the current time ( Nov. 2010) DeWalt makes both 18 V Nicad batteries and more expensive and lighter 18 V lithium batteries that fit its 18V cordless tools.I rate this saw as three stars out of five to indicate that it is an average cordless saw. It may be a better than average deal depending on your requirements and its current price.
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Reviewed in the United States on March 9, 2013
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Reviewed in the United States on December 20, 2015
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Reviewed in the United States on August 26, 2008
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Top reviews from other countries

Thavy S
5.0 out of 5 stars Great for DIYers
Reviewed in Canada on August 26, 2016
Roselle
5.0 out of 5 stars Great little saw!
Reviewed in Canada on July 17, 2013
2 people found this helpful
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David
5.0 out of 5 stars Must have tool
Reviewed in Canada on January 15, 2014
2 people found this helpful
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marc
5.0 out of 5 stars GREAT TOOL TO HAVE!!!
Reviewed in Canada on August 14, 2013
2 people found this helpful
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Shaun
4.0 out of 5 stars It takes some time compared to a corded tool but I never felt like i was lacking the proper tool for the job
Reviewed in Canada on January 24, 2015
3 people found this helpful
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