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Ridgid R4120 Saw, 12-Inch Compound Miter with Laser

4.6 out of 5 stars 14 customer reviews
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  • Ergonomic D-Handle - for improved grip and handling
  • 15 Amp Motor - heavy duty motor powers through the most difficult cuts
  • Work Clamp with Quick-Release Lever - securely holds material in place
  • Sliding Miter Fence - provides support for wider material. Adjusts for bevel cuts
  • Repeat-A-Cut Marking Surface - allows user to mark fence for repetitive cuts
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Product Description

Product Description

Includes 15 Amp, 12 in. Compound Miter Saw With Exactline Adjustable Laser - ZRR4120

From the Manufacturer

Ridgid R4120 12-inch Compound Miter Saw with Laser features ergonomic D-handle for improved grip and handling. The 2-1/2-inch dust port provides connection to standard dust collection systems to help keep work area clean. The 15 Amp heavy duty motor powers through the most difficult cuts. Repeat-A-Cut marking surface allows user to mark fence for the repetitive cuts. Work clamp with quick-release lever securely holds material in place. Left side Table Extension for increased material support. Sliding miter fence provides support for wider material adjusts for bevel cuts. Extended bevel and miter ranges are -3 degrees to 48 degrees bevel and 0 degrees to 47 degrees miter capacities accommodate a wide variety of cuts. Sof-touch controls improve comfort and grip. Specifications: Motor: 120 V, AC only, 15 Amps, No Load Speed: 4,000 r/min. (RPM), Blade Arbor: 1 in., Blade Diameter: 12 in., Weight: 49 lbs. Cutting Capacities: Baseboard Against Fence: 4 3/4 in., Crown Molding Laying Flat: 6 1/2 in., Baseboard Laying flat: 7 7/8 in., 90 degrees Cross Cut (nominal): 2 in. x 8 in. or 4 in. x 4 in., 45 degree Miter Cut (nominal): 2 in. x 6 in., 45 degree Bevel Cut (nominal): 2 in. x 8 in. Includes MS1250 Miter Saw, Exactline adjustable laser guide, table extension, carbide tipped blade, dust bag, dust guide, work clamp, blade wrench, hex keys, operator's manual.

Product Information

Technical Details

Part Number ZRR4120
Item Weight 58.5 pounds
Product Dimensions 28 x 22.5 x 19 inches
Item model number R4120
Color Gray
Power Source corded-electric
Voltage 120 volts
Item Package Quantity 1
Included Components bare-tool
Warranty Description 90-Day satisfaction guarantee policy, Limited 3-year warranty, Lifetime Service Agreement

Additional Information

ASIN B001W0ZIAY
Customer Reviews
4.6 out of 5 stars 14 customer reviews

4.6 out of 5 stars
Best Sellers Rank #408,089 in Home Improvements (See top 100)
#130 in Home Improvement > Power & Hand Tools > Power Tools > Saws > Miter Saws
Shipping Weight 58.5 pounds
Date First Available March 31, 2009

Warranty & Support

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By C. Aumack on November 25, 2010
I've had this saw for about six years and can't really complain. It's a pretty good saw for the price. It's not top of the line, but neither is the price. I have had no problems in the time I have owned it. I replaced the blade with a 12" Freud Diablo and it cuts great. Smooth cuts every time. The dust collection is just OK. Even with a shop vac hooked up there will still be some saw dust that doesn't go in the collection port. The laser works great. Just remember that the laser will be 1/16" to the left of where the cut will be. That's because the laser is mounted on the sawblade/arbor. It uses some small batteries and only turns on when the saw is running because the switch works by centripetal force. With light use, the laser's batteries lasted about 4 or 5 years. They were easy to change. The miter action works fine. I wouldn't call it smooth (like some of the higher-end saws, like the Bosch) but it's not rough either. There are stops at 45 and 33.something for crown molding. The bevel action is OK also. The scale for the bevel adjustment is hard to get absolutely perfect, so for precision work use an angle finder of one sort or another. There are no stops on the bevel adjustment.

My saw (which was bought at the orange big-box store) came with a powder-coated stamped steel stand. Very basic but functional. The one gripe that I do have about this saw is that the bolt holes in the saw base do not line up exactly with the holes in the stand. I don't think I've ever used the detachable vise. The cutting capacity is pretty good. It will easily cut a 4"x4".

All in all, I think it is a good middle of the road saw. It's not a seven hundred dollar Bosch, but is alot better than a 99 dollar Ryobi. I've been happy with it.
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I've used this for all kinds of projects and a few times I needed to adjust the bevel angle and found it does not have detents. That's a pain. You need a nice square handy to make sure the 90 (vertical) is true afterwards, and it's really hard to repeat a bevel angle. So as a chop goes, this one is okay. For crown, I would suggest you pay more for one with detents on the bevel angle. Also, like most saws the blade that comes with this is not very good. I replaced it with a 100 tooth Ridgid blade and it cuts beautifully. So I downgraded this saw, which I like otherwise, for a lousy bevel adjust and a crappy blade.
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By A.J. on January 18, 2013
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I bought this saw to save a little money fom buying a new saw. I figured that what ever went wrong when it was new was fixed at the factory. I have used this saw many times and it works perfectly! I checked to make sure that the saw blade was perfectly square and it was dead on. I would highly recommend this saw to anyone that is looking for a good compound miter saw.
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Have had this saw for about a year now and it is fantastic. Very accurate with angles, the laser is easy to see while cutting and lots of power to cut through stuff. Would recomend to anyone. My brother now has one and loves it as well.
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I am a carpenter by trade and needed this monster so i could cut large crown molding and it does the jod!!!
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This item was advertised as factory-reconditioned. However, my husband found the table locking pin bent which threw off the degree measuring capability. It was obviously not checked out before mailing. Due to the exorbitant return mailing fees, he kept the product and repaired it himself.
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I actually got this for $250 at HD, and it worked well enough and did what I needed it to do. Changing the blade isn't as straight forward, but if you don't have to change it often, then it shouldn't be a problem. It came with the throat guard (where the blade goes down into) uncut, so you are the one that has to make that initial cut, as well as calibrating the plum and the 0 degrees with a combination square.

I used to have the DeWalt 10" and it came with everything calibrated, so I was surprised I had to for the Ridgid.
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