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Rockler 4-Way Equal Pressure Clamp

Adjustable length clamp provides pressure from all four sides for big projects like gluing table tops and shelving.
Item #
20981
Rating:
74% of 100
Adjustable length clamp provides pressure from all four sides — ideal for big projects such as gluing table tops and shelving. To make wood pieces, drill a series of 5/8" holes spaced 2" apart down the center line of the board face of a 2x4 piece of lumber. Then rip the board lengthwise through the centers of the holes, creating two pieces approx. 1-1/2" x 1-11/16". Rotate the notched boards so that notches are away from each other.

Features:
  • Applies pressure on workpiece face when edge-clamping to prevent bowing and buckling large panels
  • Clamp attaches to any length 2 x 2's (lumber and wood clamp pads not included)
  • One Clamp per Package
  • Includes one set of 2 parts (Two sets shown in photo)
(1) 4-Way Equal Pressure Clamp
More Information
Brand Rockler
Weight 3.1500
3.7 / 5.0
77 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
35
13
12
4
13
Great 4 way clamps
They work awesome and easy to uee
October 29, 2019
Purchased
1 month ago
Woodworking Experience:
Intermediate
work great and easy to use
October 17, 2019
Purchased
1 month ago
Woodworking Experience:
Intermediate
Works great. I should have bought them years ago
October 16, 2019
Purchased
1 month ago
Have only used these once so far on a cutting board glue up. Great for keeping the boards aligned. Used in conjunction with bar clamps to get more clamping force. Worked for my intended use as expected.
October 8, 2019
Purchased
2 months ago
Woodworking Experience:
Advanced
Life Saver
Just what I need to secure those wide glue ups. Haven't actually used them yet in a glue up but did a "test' run on some boards and they work great. Needed addition to my workshop.
October 6, 2019
Purchased
2 months ago
Woodworking Experience:
Intermediate
excelent [product
October 2, 2019
Purchased
2 months ago
Woodworking Experience:
Advanced
4-way clamp
Product was what I needed to complete some large butcher block style countertops out of cherry wood. Worked as expected.
October 1, 2019
Purchased
2 months ago
Woodworking Experience:
Advanced
Very well-built easy to use
September 30, 2019
Purchased
2 months ago
Woodworking Experience:
Advanced
Excellent clamps!
Without a doubt one of the best claps for gluing up wood for tops, cutting boards and any other panel glue ups
Ready to go
removing top rail
My review on these clamps
September 16, 2019
Woodworking Experience:
Advanced
Keeping it together!
I've used these to glue a 1x10 and a 1x8 together and they worked perfectly! I would recommend cutting the 2x4 in half first and then drilling the holes. It will give you more depth in the holes. Not a lot but every little bit helps.
April 30, 2019
Purchased
1 year ago
Woodworking Experience:
Advanced
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Browse 9 questions Browse 9 questions and 63 answers
Why did you choose this?
Rockler Store
Gluing wide panels
Johnnie M on Nov 4, 2019
Replacing a set of these I purchased back in the 90's, hope this new set lasts as long as the first set did.
Phil Y on Sep 26, 2019
Gluing wide panels
Johnnie M on Nov 4, 2019
recommendation from artisan at the gatlinburg show.
William D on Oct 28, 2019
Replacing a set of these I purchased back in the 90's, hope this new set lasts as long as the first set did.
Phil Y on Sep 26, 2019
the cost
Kurt H on Sep 25, 2019
Great review of the product.
Kevin on Sep 25, 2019
Needed extra set
Wilfredo A on Sep 24, 2019
Reviews
Roy P on Sep 24, 2019
Looking for a way to make my table top glue ups better/easier/straighter.
George G on Sep 24, 2019
Need a way to glue up hardwood panels.
Warren R on Sep 23, 2019
Looks like a versatile clamping system for glue ups so I'll give it a try.
Duke on Sep 22, 2019
the price
Lawrence O on Sep 16, 2019
Trying this affordable option to improve my glue-ups for raised panel doors.
Gebhard M on Sep 15, 2019
Needed.
Harley F on Sep 15, 2019
Price
Bruce on Sep 15, 2019
Need clamps that keep a project, FLAT while gluing.
Rik W on Sep 15, 2019
I have had my large projects warp in the clamps as they dried, with this warp should not be a problem.
William W on Sep 15, 2019
I'm hoping to build a table in the near future. These look perfect for making the top.
Jonathan R on Sep 12, 2019
Making a table and needed this type of clamp.
Janet T on Sep 10, 2019
Price was right!!
J. Mark H on Sep 10, 2019
Great price
Joe D on Sep 8, 2019
Rockler equipment and supplies are among the best. I am starting to build some tables, needed good clamps.
Henry S on Sep 8, 2019
Needed two way clamping
Richard A on Sep 8, 2019
best reviews and most flexible for different widths.
donald P on Sep 8, 2019
Looks like a good idea
Paul F on Sep 6, 2019
Good Price
Allen C on Sep 4, 2019
looking to laminate a bunch of boards and this looks just right
Richard on Sep 4, 2019
My son wanted to make a table top comprised of 2x4's glued together and could not find the proper clamps to hold it together. This looks great for that purpose.
Steve on Sep 3, 2019
Had 4 sets of these for a long, long time. Started to make wider clamp boards for them and could find only 3 sets in my storage trunk. So, ordered this one so I could have two sizes of clamp widths ready for use.
Ronnie F on Sep 1, 2019
want better control with making tables
Todd M on Jun 27, 2019
Great idea for furniture building 😀
William A on Jan 23, 2019
Been looking for something like this for a while
Dennis N on Jan 1, 2019
to save time while gluing items in my shop
John P on Dec 26, 2018
I'm making some doors and want to use solid wood instead of plywood. These clamps will make it easier to join together.
Tim S on Dec 23, 2018
Should be great for gluing up my cabinet doors. I've been having a problem keeping them flat.
Robert T on Dec 23, 2018
These clamps should be great for gluing table tops.
Johnny H on Dec 22, 2018
I will be using these clamps to assemble pallet wood panels.
George D on Dec 22, 2018
On Sale
Robert S on Dec 22, 2018
Going to make a large tabletop
Joe D on Dec 22, 2018
I BELIEVE THESE WILL BE THE ANSWER TO LARGER PROJECTS
JOE B on Dec 22, 2018
A better way to clamp - solves a problem. Good reviews.
Vickie M on Dec 22, 2018
I have been looking for a good way to clamp tabletops. These look perfect. Can't wait to try them!
Paul S on Dec 20, 2018
After having to use multiple bar clamps to keep a counter top I built from bowing, I believe this clamp will simplify the process on my next project.
John L on Dec 18, 2018
Looks like a good idea to keep the boards straight...
Bo Marstrand W on Dec 18, 2018
They provide an easy way to customize the length of the clamping "bar".
Robert H on Dec 17, 2018
I have been needing some even pressure clamps and these look like they will do just that.
Robert O on Dec 16, 2018
I have special project where I need to clamp all four sides simultaneously and this appears to be just what I needed.
William B on Dec 15, 2018
These clamps will make gluing large panels together easier.
Brad S on Dec 15, 2018
I think this is an innovative clamping method and wanted to try it out! As with all products purchased from Rockler I have been very satisfied with the quality and pricing.
Mickey on Dec 15, 2018
My son often works independently on his projects so having these clamps will be a big help for him!
H A on Dec 15, 2018
Nice to have another option in my clamp array.
Daniel on Dec 15, 2018
recommendation from artisan at the gatlinburg show.
William D on Oct 28, 2019
the cost
Kurt H on Sep 25, 2019
Im building a tabletop thats 3 x 4 salvaged lumber. Will these fit? Also, the table will be about 8 ft x 5ft, how many clamps would you recommend?
Sam S on Apr 5, 2016
How thick of material can these clamps accept?
Bobs5050 on Aug 3, 2015
BEST ANSWER: i used a 6 inch by 2 inch block 34 inches long. i drilled 3/4 inch holes every 1 and 1/2 inches. then i cut the block in half with a thin blade to make the clamp boards.do this twice and you have a nice set of them. make sure you use blue painters tape on the bottom of the block and place a small c-clamp in the middle and the glued item will come out as close to flat as it can be
If I order one of these, do I get a clamp for each end?
Fred J on Nov 25, 2016
BEST ANSWER: Yup, one end has the crank and the other has a passive spring clamp.
Do these exert any downward pressure as well as edge pressure? Could they be used to edge glue and thickness laminate at the same time? What about if you mill a slight crown into the clamping board? Do the clamps draw down on the end of the clamping board when you tighten them?
Dewesq55 on Nov 26, 2017
BEST ANSWER: I use these clamps when I need pressure from the sides and across the top of the boards being glued. They provide both. Of course, the boards you make as the “clamps” must be flat or have a little bow so they they will be drawn down flat when clamped.
How thin can these work? I am trying to make a panel 33"X 1/4
Jack_7e S on Mar 25, 2017
BEST ANSWER: We used these clamps on 3/4" material and they work very well. I would think 1/4" material would work fine - just plan your work.
How much pressure does the 4way pressure clamp exert on all sides?
Adam H on Nov 25, 2016
BEST ANSWER: It exerts enough pressure to squeeze the glued joints together while keeping the boards even. Wipe the joints after clamping and there is very little clean up and leveling of surface to be done when dry.
Are the bars included? If not, are there plans included?
Michael B on Oct 22, 2019
BEST ANSWER: No you have to make the wooden support clamps. No plans included - but you could either create them via dado blades on your table saw or using a router. Using the router may work easier as you could use a wider piece of wood, then cut on the saw into 4-6 clamping pieces.
Would these work for 10" x 16" cutting boards?
Jeff C on Dec 18, 2018
BEST ANSWER: Yes, they should work well for that.
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