DeWalt Heavy-Duty 5 Random Orbit Sander DW421

Pros: Durable; easy to control; gives great results!
Cons: Inefficient CFS; other minor design flaws

This is a tale of how my latest and most daunting house painting project to date led me to purchase the DeWalt Random Orbital Palm Sander DW421, a superb appliance that’s rapidly become a mainstay in my arsenal of house painting tools. ...

Pros: Easy to use and works good.
Cons: None

This is the best tool i have bought in a long time. I can't tell you how impressed and happy i am wi ...

Pros: VELCRO PADS! Great Size, Weight & Power
Cons: The Dust Bag falls short of expectations

I NEEDED A POWER SANDER

When I moved into my home—a house built in 1927—I had some projects I knew I would need to complete. The first was to strip layers of wallpaper (and paint) off of the master bedroom walls. I tried many...

Pros: durability, leaves smooth finish
Cons: dust collection design

I have had this tool in my shop for almost 4 years now. I have at least 120 hours on it. It has served me well, but I do have some small complaints.

I have always believed that skill with a tool is 90% of the job the other 10% is the tool....

Pros: Work horse
Cons: Never a perfect switch

I depend on random orbits for all types of sanding. Removing paint, rust and scale. Smoothing out seams and joints in wood working and just general sanding of surfaces for paint application purposes. I have been a Painting and Decorating contractor...

Pros: Well Balanced, Easy to Use, Light Weight
Cons: None

I bought the DeWalt DW421 sander to replace a Porter Cable 333 that was giving me some trouble. I looked at the Bosch R.O. sander, as well as the Ryobi. I chose the DeWalt, because it seems to be better balanced and the amount of felt vibration while...

Pros: Tough, aggresive material removal
Cons: Dust collection by broom

The DAO sanders have always been the anchor of auto body work, and after owning one for any length of time, you will find that they are a necessity in the woodshop. I found the De Walt to be a bit “top heavy” the gyro effect of the motor can be a ...

Pros: Compact with plenty of power, nicely priced
Cons: Haven't found any for my intended use

I received one of these sanders for Xmas two years ago, been using it around the house for all sorts of projects.
Dewalt tends to make a very nice tool for use around the house for lots of projects. I've already found ways to abuse this little...

Pros: Solid, Durable, and Easy to use.
Cons: none.

When I started working at my former job in fiberglass bridge construction. I was a softpalm to say the least. Having spent my entire work career up to that point either behind a cooks counter or in front of a computer. Then I moved back...

Pros: Lots of bang for the buck
Cons: Poor dust collection system

This is a very good random orbit sander. I have used and owned a number of different brands, and would put this DeWalt unit at the top of the list. Compared to the similar PorterCable unit, the DeWalt bearings seem to last a lot longer. The DeWalt...

Pros: Bright yellow so you won't lose it.
Cons: Pawnshops only give you $5 for it.

DeWalt markets their tools as contractor grade, but in reality, this unit is for the weekend warrior only. Worked great on the job-site for the first week, then it just started falling apart: -friction pad wears out rather quickly, too quickly. ...

Pros: amount of power
Cons: bit of a mushy switch, other than that- none!

This sander is the staple tool in my shop. It can sand anything, from paint, to wood, to plastic. The dust collection is an added bonus, because it keeps the air in my shop dust free. For my previous sander, I had an craftsman. Stay away!! It was a piece...

Pros: Light, easy to use, does a great job of sanding.
Cons: Poor dust collector. Failed with under 20 hours of total operating time.

While reading the positive reviews, most of the comments I will agree with but I am disappointed in the reliability of mine. Mine did not run 20 total hours when it stopped working. By the time that happened, I called DeWalt but the warranty was no good. It really forces me into buying a replacement sander.

Pros: Variable speed.
Availability of different size adaptors for plug into a dust collection system.
It's yellow.
Cons: Poor adhesive on the cloth of dust bag--the bag itself comes off.

The cloth part of the dust bag came detached from its collar. Looks like a failue of the adhesive that is supposed to keep the bag on. I returned the sander to Lowes and got a replacement for the whole sander. However, the same thing happened to the replacment. It seemed after about 15 hrs this failure occured. Anybody got any ideas about this issue?