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  • PORTER-CABLE 390 5-Inch Low Profile Random Orbit Sander with Hook and Loop Pad
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PORTER-CABLE 390 5-Inch Low Profile Random Orbit Sander with Hook and Loop Pad

42 customer reviews

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  • 3.5 Amp EnduraTech Motor for increased performance and durability
  • Electronic load control for 42 percent faster material removal
  • Enduratech motor technology has 71 percent fewer wear components for 5-10 times longer motor life
  • Electronic motor brake reduces spin-down time by 73 percent for increased productivity Mechanical pad brake reduces free-spin to virtually eliminate gouging
  • Integrated dust port accepts 1- and 1-1/2-inch vacuum hoses
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Technical Details

  • compact

Product Description

Amazon.com

The Porter-Cable 390 5-inch Low Profile Random Orbit Sander with Hook and Loop Pad comes with a 3.5 Amp EnduraTech motor for increased performance and durability. The EnduraTech Motor Technology has 71-percent fewer wear components for a 5-to-10x longer motor life and its electronic load control provides for 42-percent faster material removal. Also included is an electronic motor brake to reduce spin-down time by 73-percent for increased productivity. A mechanical pad brake reduces free-spin to virtually eliminate gouging. Other features include a low profile design that reduces sander height by 31-percent for better control and finish, and a variable-speed 7,000-to-12,000 OPM for optimal removal rate on a variety of materials. With a rubber grip for added comfort and control and an integrated dust port that accepts 1- and 1-1/2-inch vacuum hoses for optimal dust collection, this sander comes with a 3/32-inch orbit diameter. This sander measures 4 x 5 x 12 inches and weighs 2.1 pounds.

From the Manufacturer

Well-suited for remodeling, woodworking, countertops, cabinet making, trim work, and home improvement projects, the Porter-Cable 390 low profile random orbit sander is built for durability and quality finishes in hard and soft woods. With the ‘close to the work’ feel of an air tool, the 390 sits 30% shorter than the average random orbit sander. A 3.5 amp EnduraTech brushless motor has fewer wear parts for 70% better motor life than standard electric sanders. Electronics provide pad speed control under load and an innovative pad brake that delivers a hard stop to the sanding disc 70% faster than standard random orbit sanders increasing productivity. A variable speed dial delivers 7,500-12,000 OPM to optimize removal rate for the exact material being sanded. An integral dust ports accept 1 and 1-1/2 inch vacuum hoses for dust collection. The unit accepts 8 hole hook and loop sandpaper. Ninety-day money back guarantee, 3 year limited warranty, 1 year free service contract.


Product Information

Technical Details
Part Number 390
Item Weight4 pounds
Product Dimensions13.4 x 5.6 x 4.7 inches
Item model number390
Item Package Quantity1
Special Featurescompact
Included Componentsbare-tool; attachments
Warranty Description3 Year Limited Warranty
  
Additional Information
ASINB001B2EGJC
Best Sellers Rank #240,031 in Home Improvement (See top 100)
Shipping Weight4 pounds
Domestic Shipping Item can be shipped within U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First AvailableJanuary 1, 2006
  
Warranty & Support

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Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

17 of 19 people found the following review helpful By Jeff Bryson on March 25, 2009
I am what you call a "power user" of 5" sanders. I have an old milk crate of burned up Dewalt(4), PC(3), Makita (2) and Ryobi (1) sanders that I have accumulated over the last 10 or so years to testify that well over 25 linear MILES of 1x6 and 1x8 panelings, approximately 500 exposed stair treads with handrails, hundreds of beams, 1,000s of feet of trim and mouldings and even several sets of cabinetry have fallen victim to the extreme test of endurance that I have asked of them. (I don't know why I keep the dead, maybe it's sentimental or something). I have logged NO LESS than 2500 hours with a 5" sander in my hand and at least another 1000 shared between my 6" Bosch RO and 4x24 PC VS belt sander (these will be reviewed seperately) When I heard about the new 390 coming out last year, I was chomping at the bit to get one and when it became available (finally!) I ordered it. Now, over 200 sheets of paper later, I can finally, with confidence, say that I don't ever want to hold another 5" in my hand besides the PC. I heard all the complaints about the size, but my large hands love the grip, even in awkward positions and the vibration is so minimal I don't have to wear the wrist wraps I used to when sanding for extended periods. I learned years ago that to make ANY sander last longer is to toss the dust bag and go with the vacuum adapter so I highly recommend going that route. I modified the included step reducer/bag adapter to my central shop vac via a swivel ended hose to reduce kinks and I can now use it hours on end without fighting it the way a solid linked hose does. Compared side by side, hand in hand with the previous 340 series PC, this sander is FAR smoother, much more powerful, and vastly less fatiguing. If you need a RO sander for occasional use and price is a factor, then this unit may be more than you need. If you use your sander professionally, like I do, it may be time for you to take a look at the next gen.
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16 of 19 people found the following review helpful By Ryan Sparreboom on February 23, 2011
I bought this sander as an upgrade to a quickly diminishing (in quality) Ridgid sander. I am a hobbyist woodworker and work with some of the hardest woods around, making everything from household items to gallery quality furniture. I initially found this sander to be of very good quality, quickly removing material and leaving an excellent finish. Then the unit crapped out on me. The motor just died. No warning, and no apparent reason. Thinking I just got a one off defective unit, I returned it and happily took a second unit. Used that one for about a month, and it too crapped out. I always sand with my sanders hooked up to a large shop vac for dust control.
Research has led me to two possible reasons for this happening. Either the shop vac created enough excess downward pressure (suction of the sander down to the wood)to overload the motor and it quit. Or the static charge created by dust running through the vacuum hose somehow shorted out the circuit board in the unit, causing it to quit. Either way, this is clearly unacceptable and I expected more from a (reported) high quality tool. Do yourself a favor and skip this sander until PC manages to work out the poor motor issues.
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5 of 5 people found the following review helpful By Bernie Bernbaum on August 13, 2011
I've been through a bunch of sanders and like this Porter Cable best. Reliable, well shaped, effective. It has a speed control which I use fairly often. The motor has a feedback system so it runs at a constant speed, no matter what the load. The top is a bit large and I thought I might have trouble holding it but time has proven that it's very easy to hold and control.

I see some reviews where people have had failures but I've had no problems with the unit at all. I use it connected to a shop vac and find the dust collection is excellent. I've owned the sander for about three years now and use it almost daily.

Good reliable performer. I've thought about buying another one just to have a backup in case they quit making them.
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4 of 4 people found the following review helpful By Paul A. Plumb on August 29, 2008
This sander surprised me right out of the case. It's low profile was unusual, but proved comfortable. The profile could easily prevent you from pressing down too hard on the sander. It's much easier to "let the sander do the work". The aggressiveness of stock removal was impressive, yet the surface finish was smooth and clean. Swirl marks were hard to detect. All in all, I very happy with this unit.
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4 of 4 people found the following review helpful By Recon on September 4, 2011
Verified Purchase
Best orbital sander I have ever used. The dust collector is great. My hobby is to buy old furniture and refurbish them, so I spend a lot of time stripping and sanding. This is the best power sander I have used for quickly taking off paint and removing fine scratches. I am sure there are more expensive sanders out there and maybe better ones?, but for the price I don't think there is a better one.
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3 of 3 people found the following review helpful By Acester on September 5, 2013
I'm a retired professional cabinetmaker with 30 years experience. I began using Dynabrade air powered DA (duel action) random orbit sanders about 20 years ago. They were powered by a 20 cfm air compressor. Dynabrade pioneered the DA concept. I discovered quickly they out performed all other hand-held sanders. DA's sand flat without raising the grain. All other sanders except belt sanders will sand unevenly (summer growth sands faster than winter growth in a board, flat sawn wood sands more unevenly than quarter or rift sawn wood. You may sand any direction without concern. The only drawback are small sanding swirls from coarse sandpaper. To address this I used two sanders. One for coarse fast wood removal with a 3/16" orbit and using 80 and 120 grit paper. The other to remove sanding swirls with a 3/32" orbit for 150 grit and up. After about 220 grit you won't see sanding swirls depending on the species of wood and how high a gloss finish is applied. Sand paper wears out two ways; the grit gets dull and or the paper loads up (open coat less so than closed coat). I recommend changing paper frequently and stepping up sanding grits from coarse to fine in small steps. 80, 120, 150, 180, 220 etc. I generally sand up to 400 grit.

I sold my studio and all the large shop tools including the 20 cfm air compressor leaving me without a finish sander. Other manufactures have tried producing electric DA sanders with unsatisfactory results. They were underpowered and or cumbersome. The low profile Porter cable 390 is the first to really succeed. I have sanded numerous projects with it using differing woods at all sanding aspects with very good results. Those that have complaints are probably using poor sanding technique; using worn out or loaded up paper or pressing to hard, forcing the sander. The sander likes to be blown out occasionally. Great value for the price.
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