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Rockler Clamp-It® Corner Clamping Jig Zoom

See it in action:

Rockler Clamp-It Corner Clamping Jig
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DIY Cabinet for a CNC Shop Stand
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Rockler Clamp-It® Corner Clamping Jig

Item #: 58918
Firmly holds panels at a precise right angle, freeing up your hands so you can drive fasteners.
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Regular Price: $29.99

Special Price $25.99

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Overview

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.


Features:
  • 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

Important Notes

  • Drilling of 3/8" holes may be required in older Clamp-Its for use with this product.

What's included

(1) Rockler Clamp-It® Corner Clamping Jig
(2) 1'' Screws for Attaching Clamp-It (#29190 not included)

Technical Details

  • Material: Glass-filled polycarbonate
  • Max Panel Thickness: 1''
  • Brand: Rockler
  • Weight (lbs): 1.5000

Technical Downloads

Adapting the Rockler Clamp-It® Corner Clamping Jig Guide

Frequently Bought Together

Questions and Answers

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Browse 12 questions Browse 12 questions and 79 answers
Why did you choose this?
Rockler Store
Needed something like this for my shop.
Robert W on Oct 15, 2017
Extra set of hands.
Phillip H on Oct 8, 2017
Needed something like this for my shop.
Robert W on Oct 15, 2017
For cabinet building
Dennis G on Oct 8, 2017
Extra set of hands.
Phillip H on Oct 8, 2017
Looks like will simplify assembling cases and boxes
Glenn D on Sep 4, 2017
Looks sturdy and well made. Looking for a way to make drawer box and cabinet carcass assembly easier
B C on Aug 30, 2017
improve accuracy
Jack P on Aug 14, 2017
To more easily make credenzas and cabinets
Lauren H. on Jul 30, 2017
for a third hand
D A on Jul 28, 2017
I work for an Antiques store and repair furniture. I thought these items would help me make better repairs.
GEORGE D on Jul 26, 2017
highly practical and effective for all cabinet work
John L on Jul 24, 2017
help squaring boxes
Dominick G on Jul 15, 2017
good option for picture frame gluing and nailing
Robert L on Jul 6, 2017
Part of the clamp it assembly
Eugene K on May 31, 2017
I am building a saw stand that has a box structure and I need help getting the corners square. This looked as good or better than most other jigs on the market.
Michael D on May 27, 2017
I build a lot of drawer boxes and wanted to improve the squareness of the assembly
Darwin C on May 24, 2017
for my right angle brackets
Joseph S on May 22, 2017
I lick the clamping jig for work
Roberto m on May 19, 2017
assist in make cases and shelves
Carl S on May 17, 2017
I tried the corner braces and i thought I would try them at the same time.
EDDIE O on May 14, 2017
I have looked at these for a long time. Enough struggling with tall joinery. Can't wait to receive them
Jim M on May 13, 2017
Needed an easier way to do 90 degree joining
Dave A on May 11, 2017
I already had a pair of Clamp-Its and had been waiting for the jigs to be available separately.
Terry W on May 8, 2017
Add-in to my corner clamp-it assemblies; and in spite of some of the reviews downplaying this item, I will rate it based on my own needs.
Jesse G on May 8, 2017
I found the first 2 that I bought worked well so I ordered 2 more.
John on May 7, 2017
Video of it looked great, and it's on sale!
Howard B on May 6, 2017
Saw it on a video and seemed to be a handy clamp to have.
Joel S on May 1, 2017
Aid building cabinets. Holds lumber in alignment while fastening together.
James J on Apr 30, 2017
these corner clamping jigs come handy when gluing up panels for my cabinet-making needs like having a extra pair of hands for those large panels
jerry c on Apr 30, 2017
Looks like it will work great to assemble cabinets
Rose L on Apr 29, 2017
I saw the video and he sold me.
Roger S on Apr 29, 2017
FOR MAKING CABINETS
Steve C on Apr 29, 2017
I needed two to go with a pair I have now more for a project. They worked well for me before.
Robert B on Apr 29, 2017
need for pantry project.
William P on Apr 29, 2017
Great price!
Reynaldo T on Apr 29, 2017
I needed more hands and hope that these will work.
John N on Apr 24, 2017
To make a set of four.
Terry R on Apr 22, 2017
looks helpful in installing baseboard corners
betsy s on Apr 20, 2017
looks great for assembling cabinets
Gary N on Apr 18, 2017
Work alone, hopefully this will make some task easier
eric p on Apr 8, 2017
I'm building cabinets and this looks like the perfect tool for square cabinets
J C on Mar 27, 2017
to assemble cabinets
Stephen A on Mar 20, 2017
These alignment aids are four-thumbs up. Very good control in properly aligning assembly parts.
Jerry N on Mar 18, 2017
I already had the Clamp-it assembly squares and was assembling some base cabinets. these made the assembly much easier.
Michael R on Mar 14, 2017
Building new kitchen cabinets
Richard M on Mar 2, 2017
home projects
Clarence L on Mar 2, 2017
cabinet glue-ups
James J on Feb 27, 2017
Planing on a project to join the corners of plywood
RAFAEL R on Feb 27, 2017
Been eyeballing these a while, have some cabinets to make, figured now is the time to try it out
George W on Feb 26, 2017
I have 4 of the Large assembly squares, 4 f=of the Small assembly squares and 4 of the Adjustable Angle assembly squares.
Ralph S on Feb 25, 2017
Saw online videos and was impressed. However, I was surprised since I intentionally searched your site for the product and couldn't find it. Had to do a live chat in order to get the item. I had an order that was placed earlier in the day without this -- glad I tried a second time.
Kathy B on Feb 24, 2017
For cabinet building
Dennis G on Oct 8, 2017
Looks like will simplify assembling cases and boxes
Glenn D on Sep 4, 2017
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!
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.
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.

Reviews

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4.5 / 5.0
132 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
88
30
7
4
3
love them for making floating shelves and pedestals, but not sure of durability
I bought 4 of them along with the clamp it squares 2 months ago looking for easier way to produce some pedestals and boxed floating shelves quickly for an art gallery. They worked wonderfully to square corners and felt like I had an extra set of hands. Would have given 5 stars except on hand tightening one down the knob snapped right off the shaft. I am buying another because I love the concept. Hope this was just a flaw in that one.
October 31, 2015
Purchased
 over 2 years ago
Woodworking Experience:
Intermediate
Nice Item, With One Problem
These jigs are well-made and as a previous reviewer said, they are like having an extra pair of hands. However, I did have one problem: the holes used to bolt the Clamp-It Assembly Square to the Jig do not align with each other. I had to drill new holes in my older squares.
November 24, 2015
Woodworking Experience:
Intermediate
cheap material
Poorly built. I stored them on a shelf 6 in off the floor. They fell off and shattered the plastic knobs. No longer useable. They should be able to take more abuse than that. Especially at that price. Worked great before they broke though.
December 29, 2015
Woodworking Experience:
Intermediate
Rockler clamp --- clamping jig
Bought these products just before starting my project of building an Altar for a local Catholic school's Chapel.

Have never had better piece of equipment that held the sides
in place while preparing to glue the rest of boards together.
November 15, 2015
Purchased
 over 2 years ago
Woodworking Experience:
Advanced
Works great!!
I love this new jig. Much better than the old clamp-it with the small bar clamps. My only comment was that I had the old clamp-it squares and had to drill new holes to make them fit the new jig...no problem, just something people should know if they previously bought the old squares instead of the new ones and the new jig..
January 14, 2016
Purchased
 1 year ago
Woodworking Experience:
Intermediate
Clamp-it
Clamp-it is a great idea and works well.Only problem, as with a lot of good ideas,it`s made cheap where it is used most. The handles on two units,out of four, have broken off on the first project. Guess I should have bought some locking grips to continue using. For the price I do expect a little durability.
March 1, 2016
Purchased
 1 year ago
Woodworking Experience:
Advanced
Clamping Made Easy
I purchased (4) of Rockler's Clamp-It corner clamping jigs to help me with building some additional kitchen cabinets. I already had (4) of the Clamp-it's to use with them. I must say, the jigs do work very well and once you have your work pieces set up in the jigs properly, they are very repeatable. You can remove one side of the the project you are working on at a time for applying glue or whatever and replace it with out having to adjust anything. I found thru using these jigs that the secret of squareness is not to over tighten the clamps as they are just plastic and they will flex. Other than that, I was very pleased with them and even plan to buy another set of (4) in the near future.
January 22, 2016
Purchased
 1 year ago
Woodworking Experience:
Intermediate
I orig bought two and but one of them must have been just a defective piece as both the plastic end of the turn screws broke off. Rockler sent me a new one with no hassle and haven't had an issue with the new one.
December 18, 2015
Purchased
 1 year ago
Woodworking Experience:
Intermediate
Design Flaw
This product is meant to be used with the Rockler 29190 corner clamp. Yet, in this mode, the clamp can accommodate only 7/8th inch stock. For people like me who often work in 1 inch or more stock, this clamp does not accommodate. This fault is surprising. It would have been very simple to add 1/4 inch to the clamp making it much more versatile.
February 12, 2016
Woodworking Experience:
Advanced
It does the job but is too large for a universal use. Bit for the larger cabinets it's great.
November 16, 2015
Purchased
 over 2 years ago
Woodworking Experience:
Beginner

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