March 29, 2021

Dewalt dwe6423k vs dwe6421k | Which Random Orbit Sander To Pick

Choosing between the Dewalt dwe6423k vs dwe6421k is difficult, as both devices share commonalities and unique features you would not want to miss. Both devices have strengths and weaknesses, which I will explain in this article. They have the same weight, height and width. They have the same price range. However, two features set them apart that you should consider.

Overview of the DWE6423k

The DWE6423k has a 3 amp motor that spins from 8,000 to 12,000 OPM. The height draws you closer to the machine, no matter how tall or short you are. That will relieve you from the strain of reaching out to machines. The counterweight design is noticeable as a shock absorber at the top of the work. 

You do not feel vibrations, which improves the machine’s comfortability. The rubber over-mold takes care of tough areas of the machine. The dust collection system keeps you safe from sawdust and makes your tool last longer. It comes with a dust bag handled using one hand. The bag does not require you to empty it in a short period. The dust port fits directly into the DWV010 or the DWV012 dust collectors. The sander weighs up to 4 pounds. 

The package includes the sander, dust bag, owner’s card and a carrying bag. It is ideal for DIY enthusiasts since it is easy to use and connects to the vacuum. The sander is smooth and easy to maneuver. It is not difficult to use on tricky parts of an item. You must ensure that you have lined up the holes at the bottom perfectly so that changing the sanding pads will not be difficult. 


  • Smooth
  • Fast
  • Low vibration
  • Light and ergonomic
  • High quality


  • An adaptor for the shop vac is required
  • The dust bag could be bigger

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Key features of the Dewalt DWE6423k

Dust collection system

The improved dust-sealed switch protects you from dust inhalation and ensuring machine durability. The dust collection system keeps your workshop dust-free. The dust bag is a one-handed locking bag that is easy to use. The dust port fits perfectly into the DWV0110 or DWV012. You can add an adapter if you wish to use a shop vac. You can have your machine connected to a universal Quick Connector DWV9000. 

Safety features

Safety features are there to ensure that you have a safe workplace. Rubberized handles prevent your hands from slipping. It protects your tool from damage on hard surfaces, and the ergonomic design protects you from electrical shock. The dust-sealed switch makes you safe from just a saw. The vacuum locking system allows you to have a secure dust bag attachment.  

RPM Speed

The machine operates within a range of 8,000 and 12,000 OPM. That makes it faster and gives a smooth finish. The variable speed control system makes it accurate. The polishing process is made smooth. 


The handle makes the tool handy when operating. The Dewalt sander has a large palm grip just above the sander. The handles are rubberized, and that is very comfortable to hold. The handles give better sanding in tricky areas. Your hands are safe on harsh surfaces. 

Powerful motor

The 3 amp motor produces spins between 8,000 and 12,000 OPM. The orbit is electric-powered, and it makes vibrations. However, you do not feel the vibrations due to the counterweight design that absorbs the vibrations. The motor has an air vent for high air circulation that controls overheating. The cooling system is effective.

Overview of the Dewalt dwe6421k

The Dewalt dwe6421k is a palm grip orbital sander that is compact-sized. It has a rubber design makes it easy to handle with one hand. It comes with a dust-sealed switch that prevents dust clogs inside the machine. That increases the durability of the tool. 

The removal and locking of the dust collecting bag are easy. The machine comes with a dust-sealed switch and a vacuum beneath the machine that disposes of dust whilst the tool is in use. It has a one-hand locking feature. The machine operates at a speed of 12.000 OPM. The sander moves in a random pattern. That leaves your material with a smooth surface that does not have scratches. 

The hand sander is very short. That is convenient to the user. You will be close to your workpiece. However, that does not compromise your safety. The counterweight design reduces vibration. That gives you more comfort from the electric machine. The dust port fits directly into the DWV010 or the DWV012 dust collector. You can connect the dust port to multiple vacuum systems with 1-1/4 inch hoses. You are allowed to use the DWV9000 Universal Quick Connector.


  • Affordable
  • Compact size
  • Easy to operate with one hand
  • Fast and smooth
  • An impressive dust collection system


  • Fixed speed limit
  • It has plastic pads

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Key features of the Dewalt dwe6421k

Dust collection system

The machine has a fully-dust-sealed switch. That makes it free from the accumulation of sawdust inside the machine. In this case, it stays longer than expected. Chances are low that sawdust clogs up the socket. It also comes with a dust collecting channel below the tool. It gets rid of dust whilst the machine is in use.

Powerful motor

The Dewalt DWE6421K has a fixed speed rate, making it easy to control the machine. The 3 Amp motor spins the pad at 12,000 OPM. That is ideal for fast material removal. The hook-and-loop feature makes it efficient. 

Locking system

The locking system with the machine makes it easier to lock the device when not in use. You control it using one hand. The unlocking system is as easy as the locking system. The locking system is there to keep you safe. There is a large handle that makes handling easy and comfortable.

Sanding pads

The Dewalt DWE6421K has a Velcro attachment system known as a hook and loop system. It is for attaching sand pads to the device. The attachment is easy as well as the removal of the pads. They have to stay in place even when you are using the machine.


  • They are both palm grip orbital sanders.
  • Both products have the same height (5.5 inches), width and depth.
  • They have 3 Amp motors.
  • They have the same dust collection system that has a dust collecting bag.
  • They use a 5inch sanding pad.
  • They have vivid exposure to the activities between the sandpaper and the materials due to their reasonable size.
  • They both weigh up to 2.9lbs. They are lightweight.
  • They both reach the maximum sanding speed of 12.000OPM.
  • They are both faster and smoother.
  • They fall under the same price range.

Differences between dwe6421k and dwe6423k

  • The DWE6421K has a fixed speed of 12.000 OPM, whereas the DWE6423K has a speed variance ranging from 8.000 up to 12.000 OPM.
  • The DWE6423K is more affordable than the DWE6421K.


Both products fall under the same price range. They are all under 100. However, the Dewalt DWE6423K is more affordable than the DWE6421K. You only save a few bucks if you are to go for the DWE6423K.

Verdict on the dwe6421k vs dwe6423k

After thoroughly examining the two products above, notable unique features will point to your best pick. Dewalt DWE6421K is not complicated; hence it is ideal for DIY enthusiasts. It is durable and affordable. However, the DWE6423K is more affordable than the Dewalt DWE6423K. It is for professionals and flexible when you are operating the machine. In this case, you know the perfect tool when you have a tight budget.

David D. Hughes

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