Special Price $19.99 Each Regular Price $29.99 Each
In stock
Firmly holds panels at a precise right angle, freeing up your hands so you can drive fasteners.

Rockler Clamp-It® Corner Clamping Jig

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Rockler Clamp-It® Corner Clamping Jig Rockler Clamp-It® Corner Clamping Jig Rockler Clamp-It® Corner Clamping Jig Rockler Clamp-It® Corner Clamping Jig Rockler Clamp-It® Corner Clamping Jig Rockler Clamp-It® Corner Clamping Jig Rockler Clamp-It® Corner Clamping Jig Rockler Clamp-It Corner Clamping Jig Build a Small Cabinet with Rockler’s Clamp-It Corner Clamping Jig DIY Cabinet for a CNC Shop Stand DIY Entryway Table
Rockler Clamp-It® Corner Clamping Jig
Frequently bought together
  1. Rockler Clamp-It® Corner Clamping Jig
  2. +
  3. #29190 - Clamp-It Assembly Square
Total price: $0.00

Struggling to hold cabinet parts in alignment while driving fasteners can be an exercise in frustration, 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® (#29190, sold separately) 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
  • Drilling of 3/8" holes may be required in older Clamp-Its for use with this product.
(1) Rockler Clamp-It® Corner Clamping Jig
(2) 1'' Screws for Attaching Clamp-It (#29190 not included)
More Information
Brand Rockler
Weight 1.5000
Tech Spec
  • Material: Glass-filled polycarbonate
  • Max Panel Thickness: 1''
Technical Documents Adapting the Rockler Clamp-It® Corner Clamping Jig Guide
Prop 65 WarningWARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov

4.5 / 5.0
185 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great Product.
Just used my set of four, what a great set of extra HANDS!.
November 12, 2018
10 months ago
Woodworking Experience:
That extra pair of hands you need
great for building cabinets, hold the parts in place while you attach the panels makes an normally y awkward job a simple single person operation. Look to be strong enough to last a long time given how much I'll use them.
November 9, 2018
2 weeks ago
Woodworking Experience:
Have not actually used this product yet but did do a test with a couple of pieces of wood. Seems that putting together a square corner should proceed easily with this setup. I had already purchased the right angle "squares" that go into this unit. Cost tho seems a bit high.
October 29, 2018
1 month ago
Woodworking Experience:
A great tool since I was only born with two hands.
October 17, 2018
1 month ago
Works like a charm
October 17, 2018
1 month ago
Had two now I have four works great makes easier
October 2, 2018
2 months ago
Woodworking Experience:
Work Great
It is like having that extra pair of hands you need to square corners.
October 1, 2018
Woodworking Experience:
Clamptastic - 2 in 1, worth the money
These work great with the L clamps that Rockler sells, great for doing corner work with the two built in clamps that help keep the corners lined up, even and secure for glue work, pocket screws for both hard and soft woods. I have recommended to other wood workers as these are pretty stable, reliable, and hold together tight, better than many other clamps I have tried for these type of projects. Highly Recommend.
September 19, 2018
2 months ago
Woodworking Experience:
used it to assemble flag display case
July 15, 2018
5 months ago
Woodworking Experience:
The corner clamping tool is one of the best tool it make the job go faster . Love it will need to buy couple more.
July 9, 2018
over 3 years ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 14 questions Browse 14 questions and 83 answers
Why did you choose this?
Rockler Store
for better accuracy on picture frames
Jack L on Nov 14, 2018
On sale. Make my life easier.
Marc R on Nov 11, 2018
for better accuracy on picture frames
Jack L on Nov 14, 2018
To make future projects easier.
STEVE L on Nov 11, 2018
On sale. Make my life easier.
Marc R on Nov 11, 2018
Replacing old Harbor Freight ones
Rocky A on Nov 11, 2018
Upcoming projects
Robert O on Nov 9, 2018
for building cabinets
Edward R on Nov 8, 2018
Frees up your hands when your working by yourself.
Metyas P on Nov 7, 2018
George R on Nov 5, 2018
I use this ALL the time These make for better quality in my woodworking. I build a lot of furniture and these keep things SQUARE
Jerry K on Oct 31, 2018
These look like they will work perfectly for the base cabinets that I am building
Richard Q on Oct 31, 2018
I am going to get much nicer corners
Joe M on Oct 30, 2018
It looks like a product I can use to square up to reassemble a large wooden cabinet I took apart for refurbishing and painting.
Katherine W on Oct 29, 2018
to make boxes that I can be confident are perfectly square
C E on Oct 28, 2018
Building a "Tack Box" for a horse trainer and this will help me screw sides together
BARRY F on Oct 28, 2018
I have 2 already and love them, use it with Rockler Clamp-it Assembly Square
Paul J on Oct 28, 2018
Making an amoire. Saw these used in a Youtube video.
ALLAN G on Oct 26, 2018
Already have 2 of these with the assembly square.. work great!!
Mark N on Oct 26, 2018
Building cases - and, on sale.
James M on Oct 26, 2018
One Man workshop.....any questions?
Nathan V on Oct 1, 2018
I have two and love them... Want to make a four corners assembly set.
Harry on Jul 21, 2018
good innovation
ensin w on Jul 5, 2018
I have two Clamp-it corners that I use with fence clamps. I want one of these so the piece can stand on it's own on the bench top rather than hanging the corner over the edge of the bench with me gripping it with all my fingers, toes, knees and elbows to hold it up!
Michelle G on Jun 22, 2018
had 2 of assembly squares and clamps wanted to make assembly easy
George H on May 31, 2018
Needing these for a job and I have two assembly squares already.
Fred L on May 31, 2018
cabinet construction.
Donald K on May 27, 2018
I now have 4
Charles J on May 26, 2018
Great way to align project to improve assembly time!
Raymond G on May 26, 2018
To whole my assembly squares in place.
Jimmy W on Apr 28, 2018
Needed additional units
Roger M on Apr 8, 2018
I had seen a video
mike w on Apr 3, 2018
needed it
turner j on Apr 3, 2018
I'm making drawer boxes.
Steve H on Mar 16, 2018
For help in assembly
John F on Feb 22, 2018
Project working on
JIm J on Feb 18, 2018
it seems to be the best on the market. I'll know more after I try it.
Michael P on Feb 12, 2018
Have one and wanted An additional one to make a set, liked the quality .
Matt K on Feb 11, 2018
Saw this in a flyer that came with recent order. I've used the clamp-it squares for years, and this seems like a good upgrade for them.
Steven K on Feb 11, 2018
About to build cabinets and drawers and want to speed up assembly
Bruce B on Feb 11, 2018
Useful in upcoming projects.
Robert S on Feb 9, 2018
to build garage cabinets
Anthony A on Feb 8, 2018
Building Cabinets in the shop and garage
Need to build cabinet boxes
mwmo on Feb 3, 2018
I'm building some cabinets for my shop and I thought these items would help make assembly much easier since I'm a one person shop.
Dolin R on Feb 3, 2018
I have one now & a second one would be helpful
Lawrence J on Feb 3, 2018
to make picture frames for my wife's painting
Donald M on Feb 2, 2018
Needed an easy helper that doesn't bother me when I need an extra hand. LOL
Thomas S. P on Feb 2, 2018
Making cabinets for storage in kitchen
Emmett B on Jan 31, 2018
Easier to have two to keep square
Carl w on Jan 30, 2018
Making a cabinet that needs to be square. I already have the Clamp-It assembly squares. These will elevate project and ensure square assembly.
Umpire.20 on Jan 30, 2018
Necessary for current upcoming projects
Robert L on Jan 28, 2018
To make future projects easier.
STEVE L on Nov 11, 2018
Replacing old Harbor Freight ones
Rocky A on Nov 11, 2018
Would it be ideal to have 4 of these while building cabinets or only having two will do just fine?
Trevor O on Sep 15, 2015
BEST ANSWER: If you are building larger cabinets, four might come in very handy
Can item 69954 be used with this item? I ordered 2 of these plus item 69954. Kinda ridiculous this item doesn't include the black plastic squares are ready
Trevor O on Sep 15, 2015
BEST ANSWER: Yes 69954 can be used with this product
What size Replacement Knob to I need for this item?
Bill R on Mar 7, 2016
Can the Rockler Adjustable Clamp-It Assembly Square (Item #33586) be used with this? Or just the fixed 90º Assembly Square?
Lane B on May 7, 2016
BEST ANSWER: This was designed for the fixed Clamp-it
Will the 58918 hold 3/4 inch plywood plus the 29190?
Thomas C on Sep 3, 2015
BEST ANSWER: Yes, it will hold up to 1" plywood plus the Rockler Clamp-It® Assembly Square (Item #: 29190)
Are there any similar products that would work for assembling carcasses built from 2x4's?
mcilroy50 on Jan 22, 2016
BEST ANSWER: You can build your own narrower versions of the 29190 square add-on to clamp thicker materials if you need a higher lip on the backside. Otherwise you can go up to just shy of 3 inches without the 29190 square inserts. With the 29190's in place the maximum width is just shy of 1 inch. Not sure why Lyman L said small wood. So the answer is maybe, it you are talking about the 1.5" dimensional side of the 2x4, but not the 3.5" dimensional side.
What would be the smallest box you could make before the clamps would bump into each other? I'm thinking it would be around 18"?
groundhog on Feb 18, 2016
BEST ANSWER: Looks like about 8" X10.25" insde clearence. These clamps are excellent for aligning larger pieces that are to assembled with screws but are not good for asembling mitered boxes which require pressure from both directions. With that said very helpful in assebling cabinets etc.
I often build large wooden boxes with box joints. Will these work well to glue them square? Thanks!
carl c on Oct 5, 2015
BEST ANSWER: Hi Carl. These clamp-it jigs are very heavy duty and work great. You must also purchase the clamp-it square (below) to go with each jig. You need at least 2 of each to be effective. I purchased 4 of each to give more versitality. They are very pricey and I regretted purchasing them at first because of that, but they have proven to be very helpful when aligning large projects. I also purchased 2 sets of the mini clamp-it assembly sets.
Rockler Clamp-It® Assembly Square
Rockler Clamp-It® Assembly Square
Would these work with Kreg pocket hole assembly?
Ted K on Oct 28, 2015
BEST ANSWER: They work really great. It is like having an extra set of hands. Highly recommended for any shop!
What is the maximum thickness of wood it works with?
Joseph D on Oct 28, 2018
BEST ANSWER: Up to an inch. Works really great on 3/4 inch just like they say. A second pair of hands. I have 4 units. Great tool.
Under the heading of "what's included", it states 1inch screws to attach Clamp-it (28120 screws not included). Are they included or not included?
George E on Jan 19, 2016
BEST ANSWER: The screws are included.
Part number 28120 does not appear to exist.
Part number 29190 in the current listing, which it says is is not included, is the black right-angle assembly square you see in the picture used with the corner clamping jig in question.
I bought two of these corner jig clamps and they arrived with out the black angle pieces shown in the photos. Are they not included? The clamps appear to be useless without them.
Larry Q on Feb 3, 2018
BEST ANSWER: It's used with the Clamp-It® #29190, sold separately.
Would I be able to use these with Woodpecker brand clamping squares? It would make setup time much faster than using separate clamps.
Ted K on Oct 17, 2016
BEST ANSWER: I bought two of these clamps and they have been a great help in many different projects. They certainly made the job much easier. They are easy to use.
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