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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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26 reviews...
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Home Hand Tools and Shop Accessories Squares Adjustable Clamp-It® Assembly Square
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