$42.98 Kit
In stock
Holds panels at a right angle, freeing up your hands to drive fasteners—includes a Clamp-It so you can start building right away!

Clamp-It® Corner Clamping Jig with Clamp-It® Assembly Square

Item #
94% of 100

Struggling to line up cabinet parts while driving fasteners can be frustrating, and if you're using a nail gun, downright dangerous. The Rockler Clamp-It® Corner Clamping Jig eliminates that frustration by providing another set of ''hands'' to hold your parts together. It's used with the enormously popular Clamp-It® (included in this package) to hold panels at a precise right angle for fastening. Used in sets of four, the jigs are supportive enough to hold an entire case assembly as it is being assembled. The clamps have soft pads to prevent workpiece marring. Mounting holes in the jig allow for attachment to your work surface.


  • Extra-wide base, high walls and strong Acme threaded clamp screw hold panels securely
  • Thick cushioned pads to prevent marring
  • Durable glass-filled polycarbonate construction
  • Mounting holes allow for attachment to work surface for creating assembly jigs
  • Jig holds panels exactly 3/4'' off the work surface so you can use scrap boards to support other corners if using only one jig at a time
(1) Rockler Clamp-It® Corner Clamping Jig
(2) 1'' Screws for Attaching Clamp-It
(1) Clamp-It® Assembly Square
More Information
Weight 2.3000
Tech Spec
  • Material: Glass-filled polycarbonate
  • Max Panel Thickness: 1''
  • Dimensions of Clamp-It Only: 8'' X 8'' X 1 - 1/2''
Prop 65 WarningWARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov

4.7 / 5.0
27 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great tool
August 30, 2019
1 month ago
Woodworking Experience:
Works great
Just what I needed to for the 90 degree angles on my small woodworking projects.
August 10, 2019
2 months ago
Woodworking Experience:
Great Product
If you are solo in your garage clamping up a project this is a great help. I used this to ensure my corners were glued up at exactly a 90 degree angle. It is also a great help dry fitting and giving you another hand. None better
August 4, 2019
2 months ago
Woodworking Experience:
great addition to my shop. definitely need to buy a total of 4 sets.
July 11, 2019
3 months ago
Woodworking Experience:
can't beat it!!!
Can't beat this product for ease in assembling cabinet boxes . Love it!
July 9, 2019
3 months ago
Woodworking Experience:
Great tool.
Just what I needed to secure cabinet sides together. Will order another set. A must have for anyone who builds boxes or cabinets.
June 30, 2019
3 months ago
Woodworking Experience:
Clamp-It® Corner Clamping Jig
The jig arrived on time and without any issues. I love this clamp jig, the only issue is the per unit price. Are they worth it, yes, but for retirees on fix income the price is a bit stiff.
June 28, 2019
3 months ago
Woodworking Experience:
Clamp it, corner clamp
Saves a lot of time and makes it easier to accurately put joints together.
June 28, 2019
3 months ago
Woodworking Experience:
Best yet
I have a few different corner holding jigs that I'very accumulated and tried over the years but this Rockler Clamp-it is the best I'very used. It is quick and easy and does exactly what it's supposed to do. My regret is that I only bought one when they were on sale. One still works fine but 2 (or 4) would have been even better.
June 28, 2019
3 months ago
Woodworking Experience:
Great quality product.
Bought four of these for cabinet making and they work like a charm. Very sturdy — tools you will use without fear of having to replace. Such a simple idea, but totally transforms your ability to produce quality work independently — never leaves you wishing you had a third hand.
June 27, 2019
3 months ago
Woodworking Experience:
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 5 questions Browse 5 questions and 52 answers
Why did you choose this?
Rockler Store
To make nice clean joints.
David F on Sep 1, 2019
stability of corner construction
Jimmie W on Aug 18, 2019
To make nice clean joints.
David F on Sep 1, 2019
Cabinet and drawer builds.
Fred M on Aug 29, 2019
stability of corner construction
Jimmie W on Aug 18, 2019
Excellent aid building cabinets by one person.
Kenneth R on Aug 5, 2019
Makes it easier to get it right.
Roger I on Jul 19, 2019
Needed for a large upcoming build.
Larry H on Jul 4, 2019
I wanted it
Joel T on Jun 28, 2019
for building kitchen cabinets and I need an extra hand!
Mary-Kathryn L on Jun 28, 2019
It will make my job a lot easier to put a cabinet,etc together.
Michael F on Jun 25, 2019
This jig will be very useful for my upcoming projects and the sale price was too good to resist.
Stuart Y on May 31, 2019
On sale!
Todd K on May 30, 2019
Price was right for some upcoming projects I have.
Marlon R on May 30, 2019
Ease of constructing cabinets
S N on May 30, 2019
I'm clamping some large panels for some cabinets. the 2 I have are the best out of all my corner clamps so I'm adding to my collection.
Russell L on May 30, 2019
it is what I needed for my shop.
DAVE on May 30, 2019
I am very careful what and where I purchase and I have always gotten products that were very useful, very well thought out, at great prices, ample opportunities to buy, and great service. Rockler is a high quality distributor in my book.
Jim D on May 30, 2019
You can always use an extra pair of hands to help you get it right!
Chuck M on May 30, 2019
40% off. I'll give a set a try to see how they perform.
J E on May 30, 2019
It seems a lot easier to use than the clamp-it clamps and assembly squares that I'm currently using.
SG on May 29, 2019
I like to try it for the price!
Christian B on May 29, 2019
building cabinets and plywood furniture and needed the extra hands!
GLENN L W on May 29, 2019
I am starting to build cabinets and this looks like it will make it easier.
Charles R R on May 28, 2019
Needed extra hands and good flash sale price.
Scott G on May 28, 2019
I make picture frames and it looked helpful
Phillip H on May 28, 2019
I am hoping to make assembling projects easier , faster , and more square.
Keith S on May 27, 2019
I bought 2 and used for cabnets, they worked great. Can't turn down the deal
Fred S on May 27, 2019
have 2 and need 2 more. great price.
ERIC E on May 27, 2019
Extra set of hands and finally on sale.
Michael B on May 27, 2019
On sale
Mark A on May 27, 2019
Smart tool..makes being square effortless.....
James P on May 26, 2019
I’ve been wanting them and they are on sale
Keith C on May 26, 2019
Square joints are a good thing- I hope these will help!
Mike M on May 26, 2019
A extra set of hands during assembly
Marty D on May 26, 2019
Need them to build cabinets
Aaron on May 25, 2019
Box and frame building
Henry Y on May 25, 2019
Square as possible cabinet type corners
David R on May 19, 2019
The video made it look useful for assembling cabinets and boxes.
Michael P on May 15, 2019
Other people that have worked with wood and Rockler have highly suggested this product so I will give it a try
Joe S on Apr 28, 2019
great for perfect corners
richard p on Apr 1, 2019
Information provided indicated a good tool for building case goods
Stephen L on Dec 30, 2018
I have one set and liked it and with this price, couldn't pass up the chance to get another set.
Rosa R on May 31, 2018
I am completing a set of 4.
Fred L on May 31, 2018
Building a cabinet
Roland H on May 30, 2018
Good tool / Discounted Price
Carlos L on May 30, 2018
Looks to be real handy
DALE E on May 29, 2018
Needed for a project
Jeff G on May 28, 2018
Agree with another reviewer that the knobs are susceptible breaking, however, these items are an excellent addition to a shop for those who build an occasional cabinet, or several. Had 2, just bought 2 more. Speeds up the cabinet building process
Martin H on May 27, 2018
I have wanted these since I first saw them but considered them too expensive at the time. This is a good price for these.
ROGER M on May 26, 2018
to help me make better corners.
Neal W on May 26, 2018
Hopes of making square corners easier to match and drill.
Patrick G on May 26, 2018
Cabinet and drawer builds.
Fred M on Aug 29, 2019
Excellent aid building cabinets by one person.
Kenneth R on Aug 5, 2019
Do you have to buy 4 clamps or does it come with 4 clamps?
Lillian V on May 30, 2018
BEST ANSWER: It only comes with one unit.
how wide can the wood be that it clamps ? can it hold 1 1/2' face frames for making cabinets ?
rich h on Dec 14, 2017
I have 4 of the older clamps as in the photo. Will they fit in this clamp jig holder?
Walter G on May 30, 2018
Clamp-it Corner jig vs Bessey Corner clamp? Pro or cons to either? Need help to choose
Theodore W on May 28, 2019
BEST ANSWER: You can also search for ‘sawdust girl working with corner clamps,’ very helpful.
More Suggestions