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Special Price $9.99 Each $12.99 Each
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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
(410)
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
Powered by TurnTo
4.4 / 5.0
410 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
289
60
24
22
15
Great item to have for assembly
From cabinets to picture frames these are great. They've gotten a bit pricey recently but they're better than others.
December 2, 2019
Purchased
 1 month ago
Woodworking Experience:
Intermediate
Clamp-It Assembly Square
Excellent assembly jig - don't know why I waited so long to purchase these.
November 23, 2019
Purchased
 1 month ago
Woodworking Experience:
Intermediate
A must have. Cheaper alternative to expensive 90 degree clamps
These have come in handy many of times. Easy to use, ready to use right out of the box, lol. Cheap and easy way to get 90 degree corners.
November 20, 2019
Purchased
 1 year ago
Woodworking Experience:
Intermediate
Great
Great tool. Multiple uses.
November 15, 2019
Purchased
 1 month ago
Woodworking Experience:
Intermediate
A must for thinner items. Works well with c clamps
November 10, 2019
Purchased
 1 month ago
Woodworking Experience:
Intermediate
keeps your work square
Working with two pieces of cabinet sides, you just clamp this on and you now have a nice hold on your work and you know you have square corners. Got me two of them and will be ordering more.
October 22, 2019
Purchased
 over 3 years ago
Woodworking Experience:
Intermediate
Precision Squares
Work very well keeping projects square and plumb. I am very pleased with their performance!
October 22, 2019
Purchased
 2 months ago
Woodworking Experience:
Intermediate
This is a simple idea
I have done this ny cutting wood blocks
But the plastic gizmo is actually easier thanks
October 9, 2019
Purchased
 2 months ago
Love Rockler Clamp-It Square
Made out of great quality material! Strong yet light-weight!
Made my job very easy and fast while framing shed walls!
October 5, 2019
Purchased
 3 months ago
Woodworking Experience:
Advanced
marathoner1982
worked great on a cabinet box
September 17, 2019
Purchased
 3 months ago
Woodworking Experience:
Intermediate
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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
xmas gift
Jeannette W on Dec 5, 2019
Gift
Laura W on Dec 5, 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
for gluing up frames and different things I plan to make in the future.
Roger V on Dec 2, 2019
help keep the corners stable.
Miguel T on Dec 2, 2019
to go with my clamp-it jig
Daniel on Nov 30, 2019
Requested as a Gift.
Jaunese O on Nov 29, 2019
Gift.
Eric Silva R on Nov 29, 2019
also great for spouse to use
John F on Nov 27, 2019
Goes with the clamping jig as do other Rockler accessories for your woodworking
DIANEKNIGHT on Nov 25, 2019
Wanted to give them a try with my corner clamping jigs for better 90 degree angels out on the job site building the cabinets.
J U on Nov 24, 2019
Gift
Dennis E on Nov 23, 2019
Try it to see if it works
TOM M on Nov 23, 2019
ease of use
donald w on Nov 21, 2019
needed to build boxes and frames
CAROL A on Nov 18, 2019
My Son asked for these for Christmas.
Teresa S on Nov 18, 2019
Very handy and helps accuracy
Ed P on Nov 15, 2019
A friend has one of these that we've used when working together and it has come in very handy.
John B on Nov 13, 2019
a friend suggested them
david h on Nov 7, 2019
I did not "choose" it. I thought it was included with the corner clamp
Richard W on Nov 6, 2019
Christmas Gift for Husband
fiona f on Nov 6, 2019
Inexpensive way to hold all my square corners square! Less hands needed...
Ted B on Nov 6, 2019
Shop cabinet building
Dennis R on Nov 6, 2019
They work well to keep projects square
Bruce H on Nov 4, 2019
To go with the two Clamp It clamps I have.
Chris R on Nov 4, 2019
It was recommended with the other items as complement
Willy on Nov 4, 2019
for true assembly
Cecile R on Nov 2, 2019
very handy to use with corner clamping jig
Steve S on Oct 31, 2019
Work by myself
Larry H on Oct 30, 2019
Keeps corners square during assembly
Kenneth R on Oct 30, 2019
Handy item to have cause I work alone
Henry F on Oct 30, 2019
to set up belt sander to square pen blanks
Jerry S on Oct 29, 2019
On sale—something I think would help my husband make cabinets, boxes, etc with less frustration
PATRICK S on Oct 29, 2019
Strong right angle clamping assistant
Henry D on Oct 28, 2019
Cause you can never have enough
Terry G on Oct 28, 2019
To help with making drawers and cabinets
Robert S on Oct 21, 2019
Its a gift to ron
RON H on Oct 21, 2019
using with jig to keep corners square
Jack C on Oct 19, 2019
It looks much easier to keep things square single-handedly
BRIAN H on Oct 19, 2019
To add to my clamps I bought last week. Make the clamps easier to use and more versatile.
Ronald M on Oct 18, 2019
To square up right angle joints, but also you can use other angles.
C. M. L on Oct 17, 2019
simple rt angles
Ladonna E on Oct 16, 2019
just needed a couple more of these. They're very handy
Jack Wein W on Oct 15, 2019
I do not own very many Rockler products but would like to in the coming months now that fall has arrived and the winter will soon follow. Time to start building!
Don L on Oct 14, 2019
Great accessory to the jig.
Phillip M on Oct 13, 2019
Plan on building cabinets for shop
Richard W on Oct 13, 2019
wanted to have a set of four
Kathleen H on Oct 12, 2019
Really saw the value in the Clamp-It Jig system.
Lorne S on Oct 10, 2019
Keeping my cabinet square
Preston C on Oct 9, 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
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
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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