Random orbit sanders are perfect when you want to remove paint and varnish effortlessly, but without scratching or marring a surface. Both of these DEWALT sanders are ideal for a wide range of tasks, including creating a fine surface finish. Both of them have reduced vibration for safety and less fatigue. Let’s look at them both to see which is the best for you.
DEWALT DWE6421K Random Orbit Sander Kit, 5″
The DEWALT DWE6421K random orbit sander kit has a 3Amp motor that rotates its 5-inch pad at 12,000 orbits per minute. Depending on the grit you use, you can remove paint and varnish or buff a surface to a high shine. It’s perfect for working on plastics, metals, and wood.
The ergonomic palm-size grip on top has rubber over-molding that reduces vibration. There’s also a built-in counterweight, too. Less vibration makes the sander easier to control and less fatiguing to use on big projects.
It’s possible to use this sander with either the left or right hand. In fact, the dust collection bag has a setup that only needs one hand to lock it into place. If you prefer to use a dust collection system with a vacuum, the dust port fits DEWALT’s own DWV010 and DWV012. Or you can purchase a DWV9000 universal connector to fit on 1-1/4-inch vacuum hoses.
Of course, since this is a sander that will be exposed to a lot of dust and debris in its lifetime, it has a sealed switch to protect the inner workings from damage. Most users that have reviewed the DWE6421K sander say it does a great job of collecting dust into its bag. It doesn’t bog down on the job or leave swirls. But if you find that a single speed sander isn’t enough for you, check out the DWE6423K variable-speed sander below.
More features of the DEWALT DWE6421K Random Orbit Sander:
- Covered by DEWALT’s 90-day money-back guarantee, 1-year free service contract, and 3-year limited warranty
- Comes with dust bag, carrying bag, and owner’s manual
- Orbit diameter 3/32-inch; weighs 2.9 pounds
- Uses 5-inch hook and loop sanding pads and discs
DEWALT DWE6423K Variable Speed Random Orbit Sander, 5″
At first glance, the DEWALT DWE6423K random orbit sander looks a lot like the DWE6421K model described above. And they are almost the same. There is just one key difference: this sander has variable speed between 8000-12000 orbits per minute. The ability to reduce the sanding speed is very helpful when sanding uneven surfaces. You can avoid walking the sander because you’ll have more control over it.
Of course, the DWE6423K sander is pretty easy to manage. While you can use it in either your left or right hands, the speed control dial is located on the left side of the tool. That makes it easier for right-handed users to reach.
Like the other random orbit sander above, this one has an effective dust collection system that piles up debris into the included bag, or sends it along into a vacuum hose. The low profile, ergonomic grip, over-molding, and counterweight against vibration make it comfortable to use even on big jobs. Some users also say that the noise level is less than other competitors’ models.
There is one other helpful feature DEWALT included on both the DWE6423K and the DWE6421K sanders. The on/switch is sealed against dust by a protective membrane. This small addition lengthens the lifetime of a sander.
More features of the DEWALT DWE6423K Random Orbit Sander:
- Covered by DEWALT’s 90-day money-back guarantee, 1-year free service contract, and 3-year limited warranty
- Comes with dust bag, carrying bag, and owner’s manual
- Orbit diameter 3/32-inch; weighs 2.9 pounds
- Uses 5-inch hook and loop sanding pads and discs
Recommendation
DEWALT makes the choice simple for you when you compare the DWE6421K to the DWE6423K. They are the same tool except for one major difference.
If you want a variable speed random orbit sander, get the DWE6423K.
If a single-speed random orbit sander suits your work, you may save money by getting the DWE6421K instead.
Both tools use 5-inch hook and loop discs. These don’t have to be DEWALT’s own brand, but they do sell a selection of paper-back discs from 80 to 220 grit.
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