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Align it, clamp it, and fasten it to get perfect angles every time! The square you can clamp has a new angle! 90° isn't always the right angle. The Adjustable Clamp-It® easily adjusts to any angle in 5° increments from 45° to 315°.
Like the original Clamp-It®, the Adjustable Clamp-It® acts as a third hand and allows you to set perfect angles for standard assemblies and glue-ups. Now you can easily assemble pedestal bases, staircases, decks, cabinets, drawers and more without custom clamping jigs! Works with any joinery technique and is constructed from high-impact, rigid polycarbonate. Recommend using with 5'' Clamp-It Bar Clamps, sold separately.
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Find the right Clamp-It® for every project! Also available from Rockler:


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Assemble any two pieces at multiple angles. Twist knob tightens and loosens, while interlocking teeth securely set angle. |
Manufactured from high-impact, rigid polycarbonate to ensure strength and accuracy. Clamps sold separately. |
Easily adjusts to set any angle in 5º increments for projects with odd angles or for typical 4-, 6-, 8- and 12-sided frames. |

Assembles in seconds!
There are few things more difficult than holding pieces of a project at odd angles while trying to assemble with a nail or screw. The NEW Adjustable Clamp-It rotates from 45º to 315° and locks in place at the angles you’ll need most!
Works with any joinery technique.
- Easily assemble pedestal bases, staircases, decks, cabinets, drawers and more without custom clamping jigs!
- Replaces custom clamping jigs, acts as a third hand, and eliminates the need for long clamps.
- Measures 8" x 8" x 1-1/2".
- Clamp it and fasten it at 90 degree and multiple angles.
- Manufactured from high-impact, rigid polycarbonate to ensure strength and accuracy.
- Clamp and fasten projects with odd angles or typical 4-, 6-, 8- and 12-sided frames.
- Knob twists for tightening and loosening, while interlocking teeth securely set angle.
- Assembles in seconds.
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Customer Reviews and Photos for:
Adjustable Clamp-It® Assembly Square
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Average Rating:
4.3
(26 customer reviews)
$19.99
Add your review...
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1) Submitted by
Russell Sleyster, from Riverside, CA
on 1/7/2011
Customer Rating: 
Adjustable Clamp-It is a solid tool, well designed and performs exactly as described. I bought two, since using two at a time provides a solid positioning of two boards, plywood or pine along the angle. Shop fabrication would have been simpler over the last fifty years If this had been around. Fine tool
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2) Submitted by
Jack Young, from South Windsor, CT
on 4/13/2010
Customer Rating: 
I bought two of the Adjustable Clamp-It forms to help with a 4 sided corner cabinet I was building. Setting the angle and clamping (135 degrees) allowed me to clamp up and hold the sides while fitting internal shelves and finishing the assembly. The clamps are large & sturdy enough to hold large cabinet pieces in place and are a great match with the Clamp-It Assembly Square (90 degree corner). Definitely a shop asset!
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3) Submitted by
Karli, from Livingston, TX
on 9/4/2009
Customer Rating: 
Works great. Thanks Rockler for carrying excellent, quality products.
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4) Submitted by
John Willette, from Bridgeport, WA
on 5/25/2009
Customer Rating: 
A fine product that significantly adds to the quality and quantity of my work.
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5) Submitted by
Tom Springsteen, from North Arlington, NJ
on 8/15/2008
Customer Rating: 
A very usefull product, versitile, and literally a third hand, simple to set up and use. A wood workers aid needed aid to complete any project.
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6) Submitted by
Randy, from Sioux Falls, SD
on 8/9/2008
Customer Rating: 
I used the clamp it system on some kitchen cabinets that I made and they are the thrid hand I needed to set them up square. They are built very well and should last a long time.
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7) Submitted by
Dave Fernandes, from Nashville, TN
on 4/5/2008
Customer Rating: 
I'll be the first to admit I thought I spent way too much money on this but now I want more than the two I got. These are amazing and what a problem solver. Highly recommended!
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8) Submitted by
Steve, from Milltown, NJ
on 4/1/2008
Customer Rating: 
Much sturdier than I expected. I have been using these to build an entertainment center than contains both 45 and 90 degree angles, and these have been extremely helpful. Works great with my pocket hole jig.
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9) Submitted by
Aaron D., from Livonia, MI
on 12/4/2008
Customer Rating: 
A good product, very useful to hold boards together during gluing or screw/nail fastening. The adjustable feature has interlocking teeth, allowing adjustment at set intervals. For built my built-in bookcase below my stairs, I needed to match the exact angle of the stairs, one example of something that is not possible with this tool. If you only buy one set, but the adjustables, even though they have some limitations in adjustment.
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10) Submitted by
Tom, from Miami, FL
on 1/31/2008
Customer Rating: 
These clamps work great when building cabinets, it's like having that extra set of hands to hold your corners together square or at an angle. Every one could find a use for this clever well built item.
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11) Submitted by
Allen, from San Juan Capistrano, CA
on 1/21/2008
Customer Rating: 
I find the adjustable Clamp-its very helpful holding odd shaped frames in place while using my Kreg Pocket Hole Jigs.
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12) Submitted by
David, from Pleasant View, UT
on 1/17/2008
Customer Rating: 
Excellent - Built better and wider than I expected. Adjustable in 5 degree increments with extremely little play. Highly recommended.
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13) Submitted by
Arthur, from S Weymouth, MA
on 1/14/2008
Customer Rating: 
Good idea to have corner clamps that you can adjust. Sometimes you need to make a corner that isn't an exact right angle. Price was good also.
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14) Submitted by
Darrin Howard, from Buda, TX
on 9/16/2008
Customer Rating: 
What a cool tool. I initially bought a couple of clamps and the 90 Clamp it a few years ago, then bought more clamps and the adjustable angle Clamp it and it makes assembly much easier and far more accurate. My dry fits and assembly go together more square and the multiple angles saves a ton of time and effort on making custom clamping blocks.
It seemed a bit pricey at first but the first time I used it - along with the 90 Clamp it, I was convinced I didn't pay enough.
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15) Submitted by
John, from Bon Aqua, TN
on 1/7/2008
Customer Rating: 
Love these, they work well and decreased amount of work overall.
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16) Submitted by
Keith Keanrey, from Albert Lea, MN
on 12/31/2007
Customer Rating: 
LOVE THESE!! With two quick clamps you have perfect corners...accuracy has increased dramatically with less work! Thank you!!
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17) Submitted by
Augustine, from Tijeras, NM
on 10/19/2007
Customer Rating: 
I used it the next day to hold my project together and it worked very well. Excellent construction. I highly recommend it.
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18) Submitted by
Rich Heineman, from De Queen, AR
on 3/28/2008
Customer Rating: 
This a versatile, sturdy clamp. It locks down in any of it's preset positions. The beams are wide, well formed and have slots for clamps to help avoid slippage (slots are narrow and require companion clamps or narrow rails like Irwin Quick-Grips).
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19) Submitted by
Chuck Wideen, from Post Falls , ID
on 2/22/2008
Customer Rating: 
Great tool!
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20) Submitted by
Jonathan, from Moses Lake, WA
on 2/16/2008
Customer Rating: 
I like to build Adirondack chairs and I use these clamps to hold things so that I can work alone well.
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21) Submitted by
John Fowler, from Pinckney, MI
on 6/6/2008
Customer Rating: 
Bought 2 sets one works great, one set has two tops no bottoms haven't had time to call. Service has been great on line, fast and on time.
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22) Submitted by
Bob Puckett, from New Columbia, PA
on 2/15/2010
Customer Rating: 
For general alignment gluing, it works OK but there are 2 obvious flaws with the design. 1. It is not a durable material. I popped one while trying to align a 45 degree angle and did not apply much pressure. From that point on it would not remain in adjustment. The edges of all the alignment groves were all but snapped off. 2. It seems the alignment "groves" are not necessarily accurately aligned with the edges of the clamp itself although it looks like it was formed that way. I guess with anything adjustable there's bound to be some inaccuracies.
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23) Submitted by
KT, from Vancouver, BC
on 1/7/2011
Customer Rating: 
Right after I ordered two of these things, I saw a cheap knock-off in one of the stores, that looked almost the same. I was not impressed at all - flimsy construction, and way too much play in the joint. So, I was a bit afraid that these would be of similar quality. Not at all! The product is excellent - rock-solid, very sturdy, positively locks at any angle. I checked them with a digital protractor, and they are both slightly off by 0.3 deg. For this kind of tool, I honestly think this is totally negligible. I have some home-made assembly squares made of plywood that are serving me well. But this tool is a very nice addition to the toolbox, as it is adjustable. Another well made and very useful product from Rockler, most definitely recommended! And 50% discount made it even better.
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24) Submitted by
Robert Edmonson, from Asheboro, NC
on 4/13/2011
Customer Rating: 
Clamp & square are well made, but I could not use them for what I needed to clamp.
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25) Submitted by
Alistair Arnott, from Newark, DE
on 1/11/2011
Customer Rating: 
I had to scrape away plastic before I could get the screw to engage and I still haven't been able to compress the spring sufficiently to incorporate it. Disappointing.
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26) Submitted by
Walter, from Tonasket, WA
on 3/23/2008
Customer Rating: 
Bought this on special promo on a whim while ordering something else. The tool looks sturdy and adjusts easily. What I did not realize until it arrived is that it comes WITHOUT the [mini] clamps - sold separately. My fault; I just didn't read carefully. But look at the photos - they show the clamps. And look at some of the other reviews - they talk about the clamps! I have some clamps that work, kinda, unless the angle is too acute.
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Home Hand Tools and Shop Accessories Squares Adjustable Clamp-It® Assembly Square
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