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Clamp-It® Bar Clamps sold separately
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Rockler Clamp-It® Assembly Square

Align it, clamp it, and fasten it to get perfect 90° angles every time!
Item #
29190
Rating:
88% of 100
Here's a solution that's so simple, you'll wonder why it took so long to develop! The Clamp-It® replaces custom clamping jigs, acts as a third hand, and eliminates the need for long bulky clamps. Simply put, the Clamp-It® is a square you can clamp. In fact, you can even assemble a cabinet one corner at a time! Works with any joinery technique, from nails to hand cut dovetails.

It's ideal for every stage of construction, from assembling plywood cabinets to face frames and drawers. Clamp-It® is also perfect for framing decks and installing rails and balusters. Attach it to a work surface, and it becomes a right angle fixture for bench assembly. Clamp-It® is computer designed and manufactured from high impact, rigid polycarbonate to ensure strength and accuracy. Size of the Clamp-It® is 8" X 8" X 1 - 1/2".

Great for:

  • Drawer Assembly: Clamp-It® is designed for use on either the inside or outside of a corner, making it ideal for assembling drawers with lipped fronts.
  • Deck Rails: Use Clamp-It® to hold deck balusters at a perfect 90° angle while fastening.
  • Bench Jigs: Clamp-It® can be secured to any work surface to create a simple 90° assembly jig.
(1) Clamp-It® Assembly Square
More Information
Brand Rockler
Weight 0.8000
Length 8"
Style Square
4.4 / 5.0
425 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
302
60
24
23
16
Clamp it assembly square
Bought one a couple years ago with face clamps, then bought a corner clamp it to go with it, then bought 3 more and 3 more corner clamps. All work well and do what they are supposed to. Very pleased
January 19, 2020
Purchased
1 month ago
Woodworking Experience:
Intermediate
Simple and handy
Not real high tech, just a handy thing to grab in a hurry. Does the job.
January 18, 2020
Purchased
1 month ago
Woodworking Experience:
Beginner
Best clamps ever.
These clamps are a lot bigger and heavier than I expected from the catalog picture. If I would of known they were this well made I would have bought them a long time ago.
January 6, 2020
Purchased
1 month ago
Woodworking Experience:
Intermediate
Great!
Actually use it all the time. Wish I had ordered two.
January 4, 2020
Purchased
1 month ago
Woodworking Experience:
Intermediate
Great
My second order of these, well worth the money
December 31, 2019
Purchased
1 month ago
Woodworking Experience:
Intermediate
really indespensible
can't do without them
December 29, 2019
Purchased
6 months ago
Woodworking Experience:
Advanced
Works great with the corner clamp to have true 90 degree corners and held true though assembly.
December 27, 2019
Purchased
1 month ago
Woodworking Experience:
Intermediate
Very satisfied
Great tool. Has many uses.
December 25, 2019
Purchased
1 month ago
Woodworking Experience:
Intermediate
Buy these, youll be glad you did
Love em. Makes assembly easier
December 22, 2019
Purchased
1 month ago
Woodworking Experience:
Advanced
Works well
Great for setting 90 degree corners.
December 20, 2019
Purchased
1 year ago
Woodworking Experience:
Beginner
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 6 questions Browse 6 questions and 60 answers
Why did you choose this?
Rockler Store
I saw a demo of these at a wood working show and thought they would be very useful.
Jeffrey D on Jan 25, 2020
This completes my set of four.
John G on Jan 24, 2020
I saw a demo of these at a wood working show and thought they would be very useful.
Jeffrey D on Jan 25, 2020
Had two, needed two more, they work so good and easy.
Phillip N on Jan 25, 2020
This completes my set of four.
John G on Jan 24, 2020
I saw April Wilkerson using this on YouTube looked to be an very helpful product.
Robert L on Jan 23, 2020
because it works with the above.
Al S on Jan 23, 2020
I thought this should have been included with the corner clamp-it jig. It wasn’t so I added to my order
Robert D on Jan 22, 2020
I plan on building a set of upper cabinets for storage in my workshop in the near future.
Jason D on Jan 22, 2020
To pair with my corner clamp.
Mark O on Jan 21, 2020
incase need quick square check
Lee H on Jan 20, 2020
Build a new woodworking shop
Goldawg on Jan 20, 2020
Saw these on the Wood Whisperer and they looked super useful
John Kansky A on Jan 19, 2020
Needed extra
Gary on Jan 18, 2020
Already had one, the sale made me decide
Randy H on Jan 16, 2020
Got to add to the corner clamping jig. I have machined aluminum corner squares that are more rigid for squaring items.
Mike H on Jan 16, 2020
Watched several videos and this seems like a great product. Will update after use.
Ted on Jan 16, 2020
I got this to go with the Rockler clamp it corner jig.
marty a on Jan 11, 2020
saw on video
S C on Jan 10, 2020
I so need this as soon as possible. Building a 1:24 tiny house that really needs to be squared.
SANDRA W. on Jan 7, 2020
square up some boxes please without giant clamps
Michael H on Jan 4, 2020
Looks like a good tool to add to my collection
Reyenaldo M on Jan 3, 2020
I bought the other piece this sits into, 1 without the other did not work for me.
" " on Jan 2, 2020
Upcoming large cabinet making project
Keith F on Jan 2, 2020
Because this item was required for use of my other purchases...
Paul R on Jan 2, 2020
Improve the quality of my work
Jim MacDonald I on Jan 2, 2020
Received 4 corner clamps for xmas
Harold M on Jan 1, 2020
I see everyone using it
Jeremy S on Jan 1, 2020
Needed for a project
Paul s on Jan 1, 2020
Very useful as a third hand
papa G on Dec 30, 2019
Work completed faster and more accurately.
Doyle K on Dec 29, 2019
it is an addition to a previous order
Thomas M on Dec 29, 2019
Given two, Want 4
Leo V on Dec 28, 2019
to fit the blue square holder
Anthony Levins A on Dec 28, 2019
To make squared picture frames
Kimberly E on Dec 26, 2019
Read great reviews in Family Handyman
tim a on Dec 26, 2019
Working on a full set of 4
J.R. N on Dec 22, 2019
To use with making cabinets
Sue H on Dec 18, 2019
Requested by my husband as essential to build cabinets.
Sharon B on Dec 18, 2019
To complement the Rocker Clamp-It Corner Jig I purchased
Gary C on Dec 17, 2019
Works with the corner clamping jig
Charles H on Dec 16, 2019
need for building cabinets
J R on Dec 15, 2019
Often make boxes and need a way to clamp and keep square.
James P on Dec 11, 2019
Christmas Gift suggestion.
Ken S on Dec 9, 2019
Christmas gift
Rosanne C on Dec 8, 2019
Works with previous clamp
Brian J on Dec 8, 2019
My husband wanted it for Christmas.
Carol K on Dec 7, 2019
Will be building some new drawers for our kitchen cabinets and these will be very helpful.
Michael T on Dec 6, 2019
xmas gift
Jeannette W on Dec 5, 2019
Work great for clamping anything at 90 degrees. Had purchased before and loved them, unfortunately, they were 'loaned' out and never got back. Guess they liked them too!
David A S on Dec 5, 2019
Gift
Laura W on Dec 5, 2019
I build a lot of small to medium sized items that I constantly have to check the square on, and having a few of these handy will make my job much faster and easier in the long run.
Arcangel B on Dec 5, 2019
Had two, needed two more, they work so good and easy.
Phillip N on Jan 25, 2020
I saw April Wilkerson using this on YouTube looked to be an very helpful product.
Robert L on Jan 23, 2020
When should I use the Clamp-it Corner Clamping Jig vs. the Clamp-it Bar Clamps?
Jerry on Apr 28, 2017
BEST ANSWER: I work for Rockler. When the material is over 2" wide to be clamped, use the bar clamps. I fit is under the clamping jig works very well.
How many are in a package?
A shopper on Jul 29, 2015
BEST ANSWER: Just one. Clamps must be purchased also. Other clamps will work.
What are its complete mesures, 8"x8"x1.5"x?"...?
Carlos Otto C on Jun 21, 2018
BEST ANSWER: 96”
What thickness of stock will this accommodate?
Ian L on Apr 14, 2019
BEST ANSWER: You can use this with any thickness of stock as long as you have a clamp that will open wide enough to clamp to it. If you are planning on using it with the fence clamps from Rockler you are limited to about 2 inches of thickness. You can also screw this to the stock which also allows for almost any thickness. It will usually support stock that is of reasonable size. I think I have used these to support 2.x4x3/4 inch plywood panels when making a set of shelves for my shop.
Does the screw holes line up to the holes in the clamp-it corner clamping jig ?
Larry K on Jan 16, 2019
BEST ANSWER: Yes, and the jig comes with the screws you need.
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