Model # 330

Internet #203162735

Store SO SKU #1000952634

Porter-Cable Speed-Bloc 1/4 Sheet Finishing Sander

Discontinued Porter-Cable

Speed-Bloc 1/4 Sheet Finishing Sander

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Frequently Bought Together

Product Overview

Powerful and durable, the Porter-Cable Speed-Bloc Quarter-Sheet Finishing Sander is suitable for professional or DIY woodworking and remodeling projects and features a 14,000 OPM with a 5/64 in. orbit. Easy to maneuver and control, the easy-grip outer housing and rubber posts make this sander comfortable to use and isolate your hand from vibration for less job fatigue and downtime. Durably made with a solid metal frame, this sander will provide years of reliable use and exceptional performance.

  • Solid metal frame for precision seating and alignment of bearings, motor and fan, providing long-lasting and trouble-free tool life
  • Rubber posts isolate your hand from vibration while enabling full sanding action for less user fatigue
  • 14,000 OPM pad speed with 5/64 in. orbit
  • 100% ball-bearings for added durability
  • Comfortable, easy-grip outer housing for superior control
  • Accepts pre-cut adhesive or self cut standard paper with metal stamp
  • Includes: sander, abrasive sheet, clamp tool and operator's manual
  • 3-year limited warranty; 1-year free service contract; 90-day money back guarantee
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Amperage (amps)
Color Family
Cord Length (ft.)
Corded Tool Type
Finishing Sander
Cordless/ Corded
Dust collection type
Pad description
Quarter Sheet
Power Tool Features
No Tool Disc/Pad Change
Product Weight (lb.)
Speed (rpm)
Tool-less conversion
Tools Product Type
Power Tool

Warranty / Certifications

Certifications and Listings
CSA Listed
Manufacturer Warranty
3 Year Limited Warranty 1 Year Free Service Contract 90 Day Money Back Guarantee

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Customer Questions & Answers

My sander has developed a chatter on one of the clamps which holds the sandpaper in place.

It will no longer hold one end of the sandpaper. The chattering is so annoying and loud, but I can not see how to correct the problem.
Asked by: LittleH
I would recommend have this sander looked at by a Porter Cable service center. You can locate your nearest service center at the following link.
Answered by: SBD_Product Expert
Date published: 2015-09-20

Will I be able to find a Pad replacement at your Bronx location.

I Need the foam part of sander replaced.
Asked by: silverlance
Thank you for your recent inquiry with The Home Depot. I believe the best advice would be to talk to one of our many specialty department professionals at your local Home Depot store. For any other questions, please visit your nearest local Home Depot store or call us at Customer Service 1-800-430-3376. Thank you for shopping Home Depot.
Answered by: THDCustomerSupport
Date published: 2016-06-24
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Customer Reviews

Speed-Bloc 1/4 Sheet Finishing Sander is rated 5.0 out of 5 by 12.
Rated 5 out of 5 by from I've had a 1/2 sheet model since 1970 and it has never failed. This model is just as solid, just ... I've had a 1/2 sheet model since 1970 and it has never failed. This model is just as solid, just smaller.
Date published: 2017-02-18
Rated 5 out of 5 by from Best on the market Would definitely recommend this product. Easy to handle and performs perfectly.
Date published: 2017-03-07
Rated 5 out of 5 by from Great sander I have several other sanders, belt, 1/2 sheet and a larger five inch orbital. This sander fits the needs for better one-handed finish sanding. The directions are quite correct, do not use downward force to use the sander. It works very nicely and maneuvers easily with just the weight of the unit. It just needs to be guided. It doesn't have dust collection, so be prepared for clean-ups.
Date published: 2015-05-20
Rated 5 out of 5 by from This product is top of the line gets used daily for 5 hours a day, worth the money if you are not... This product is top of the line gets used daily for 5 hours a day, worth the money if you are not a weekend woodworker.
Date published: 2016-11-29
Rated 5 out of 5 by from They don't get any better! I too have had one of these for about 20 years. You can sand with it for hours without your fingers getting numb because of vibration. Most sanders will have you needing to stop for a break after just a few minutes. This one is quiet, has very little vibration, and really makes the dust fly! If you buy it you'll be happy you did.
Date published: 2013-06-05
Rated 5 out of 5 by from Best, Most reliable 1/4 sheet block sander on the market I bought the exact same sander with the Rockwell name so long ago I can't remember the exact year, but it must have been at least 30 -35 years ago. It has never been apart and has never failed. Although it's a finishing sander, I've used it with coarse paper to do rough sanding and finished it with fine grit paper. It has been absolutely bullet proof. I'm glad to see this "son of Rockwell" is still on the market.
Date published: 2014-11-14
Rated 5 out of 5 by from Best sander ever made I have 2 Mod. 330 sanders. One is 41 years old.. And I have just ordered a new on/off switch for same, the first part it has ever needed.. The other is about 35 years old, no parts needed yet. I am a professional boat builder and I also do a lot of car body work. These have been my only pad sanders for the last 30 boats or so. The first time I used a 330 was as a young boat builder starting in 1968. They were the best then and remain so today. I hope they keep making them.
Date published: 2016-01-18
Rated 5 out of 5 by from Repeat user Have used this sander for many years at a previous job. Worked great, so I wanted one of my own.
Date published: 2016-06-24
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