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Damstom 38'' Panel Clamp

Sandwiches large, thick panels to hold them flat while drying—no bowing when pressure is applied!
Item #
74% of 100

Get perfectly flat panels every time with the Damstom Panel Clamp. With its two straight, parallel bars adjusted to firmly sandwich the panel, you'll completely eliminate the problem of glued panels that buckle and bow under pressure. This makes it an excellent solution for table tops, wide door panels and thick bench tops. Tool-free knobs allow you to adjust the parallel bars to clamp panels from 3/4'' thick to a massive 4-1/2'' thick. Plenty of clearance for the handle makes it easy to wind the clamp closed. Constructed from steel with a powder-coated blue finish and rugged Acme thread.

(1) Damstom 38'' Panel Clamp
More Information
Brand Damstom
Manufacturer Part Number SJD-0300-BLU
Weight 4.4500
Tech Spec
  • Opening Capacity: 38''
  • Maximum Panel Thickness: 4-1/2''
  • Material: Powder-coated steel
3.7 / 5.0
137 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Exactly what I was looking for
Works great. Would recommend
July 2, 2020
1 month ago
Woodworking Experience:
If gluing panels together this is the tool to have. Very rugged and easy to clamp project
July 2, 2020
1 month ago
Woodworking Experience:
Good clamps
Awesome clamps but way too expensive in my opinion
June 27, 2020
1 month ago
Woodworking Experience:
The clamps worked very well. I was able to join three separate boards and the joints were lined up evenly and very difficult to see. I would recommend these clamps.
April 5, 2020
4 months ago
fantastic product
Great way to make flat panels.Saves on planing and sanding
April 5, 2020
10 months ago
Woodworking Experience:
Dams trim panel clamps
Work great
March 14, 2020
5 months ago
Woodworking Experience:
Great clamps for large projects
Easy to keep panels flat while glueing them up.
February 9, 2020
8 months ago
Woodworking Experience:
I already had 2 of these clamps. I decided to do a 10.5' table top so I needed 2 more clamps. These work wonderfully to keep a flat surface when clamping several boards together.
December 29, 2019
7 months ago
These work great
December 26, 2019
7 months ago
Woodworking Experience:
Good Clamp but wait for a sale
Useful panel clamp
December 16, 2019
7 months ago
Woodworking Experience:
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Browse 15 questions Browse 15 questions and 91 answers
Why did you choose this?
Rockler Store
building dining room table need it to stay flat
Luminance Electronic S on Jun 24, 2020
Gift for my husband.
Samantha E on Jun 16, 2020
building dining room table need it to stay flat
Luminance Electronic S on Jun 24, 2020
It may come in handy when I build my countertop.
michael F on Jun 17, 2020
Gift for my husband.
Samantha E on Jun 16, 2020
I have experienced the thing this is designed to prevent. Saves me from creating my own.
Derrick J on Jun 14, 2020
I am making doors for several kitchen cabinets. The first one I made was warped after glue up. I need to prevent that on the remaining doors.
Kevin G on Jun 13, 2020
I'm making a desk
Christopher F on Jun 3, 2020
Needed some claps for panels. Price was reasonable so I am trying them
Jonh88 on Jun 3, 2020
Easy to use, and, glue doesn't bond to the metal
Joey P on Jun 1, 2020
I’m making a table and these will be perfect for glue up!!!
John P on Jun 1, 2020
Have two of them need one more
Charles R B on May 29, 2020
Planning to make a desk and table and need to make sure the boards clamp up solid.
Denver on May 29, 2020
needed one
Kevin R on May 29, 2020
Need to assemble a few wide panels - comprised of several boards
Michael M on May 25, 2020
Trying out
Dennis D on May 21, 2020
I do a lot of glue-ups and these clamps had the reviews to back up the fact they work.
Dewayne M on May 14, 2020
Flat gluing
Eric W on May 13, 2020
Already have some, needed one more
Karl W on May 8, 2020
Parallel clamps work mostly but some glue up need more ie cawls! I will try these.
Joel H on Feb 14, 2020
Helpful with panel glue up in my shop. Light but rigid enough to keep things flat.
Seanan M on Jan 15, 2020
My brother wanted two for Christmas. I accidentally only ordered one. So this is the second order.
David P on Dec 31, 2019
For clamping table tops & benches to prevent bowing or movement while gluing.
Jason N on Dec 24, 2019
E A A on Dec 24, 2019
Gift for a friend
Teri L on Dec 22, 2019
Looks like would be a good tool for my shop as I do a lot of gluing wood together.
Eddie P on Dec 22, 2019
Reviews and needed a solution for live edge panels
Donny on Dec 21, 2019
unique clamp that fits needs for several future projects
Todd B on Dec 19, 2019
Dad wanted it.
Josh H on Dec 16, 2019
Always had trouble getting my panels flat. This looks like a great solution! Can't wait to try them. I like the Rockler blue too. Of course on-sale is even better!
Michael J on Dec 4, 2019
A Christmas gift for my son. Think its very important when clamping pieces together to keep the surface flat, level.
O N on Dec 4, 2019
I have one of these, and needed a second one to make it work
Michael H on Dec 3, 2019
Cabinets I am having to make
IVAN M on Dec 1, 2019
I've had problems trying to keep my jointed boards from bowing.
DAVID S. on Nov 30, 2019
I do a lot of panel glue ups.
Dan B on Nov 30, 2019
Tried to make saloon doors and they wasn’t flat after glue up
Gale H on Nov 30, 2019
Son asked for it as gift
Diane F on Nov 30, 2019
Need flat glued up panels
William M on Nov 30, 2019
Tired of panels bowing when clamping
Gary L on Nov 30, 2019
My husband wanted it for Christmas!
Jamie J on Nov 28, 2019
Husband wants it
Danielle F on Nov 27, 2019
In the process of building a blanket chest... need to keep panels flat!
James H on Nov 25, 2019
Needed another one.
James G on Nov 22, 2019
I've only one, need two, one won't do.
LARRY M on Nov 21, 2019
I work with wine barrels last tops hat Ned to be separated and glue back together without bowing.
Brad D on Nov 18, 2019
Looks like a good product for my needs.
Don on Nov 17, 2019
Hoping to make flatter panel glue ups....
Michael F on Nov 16, 2019
Laminate wood together
James S on Nov 15, 2019
Frustrated trying to get flat panels. This should make them perfect!
Michael S on Nov 13, 2019
Reviews online
Charles S. on Nov 12, 2019
I am a disabled veteran and I make wooden American flags. These clamps will make it easier to flatten the stripes while gluing.
Danielle T on Nov 8, 2019
I make a lot of end glue up projects and this seems like the perfect tool to streamline processes.
Joshua Facteau O on Nov 4, 2019
It may come in handy when I build my countertop.
michael F on Jun 17, 2020
I have experienced the thing this is designed to prevent. Saves me from creating my own.
Derrick J on Jun 14, 2020
What differences, if any, are there between the Damstom D300 Black Edition Panel Clamp (38 inches) clamp and the Damstom clamp offered exclusively by Rockler? We have the obvious Rockler-blue, but is the material the clamp is constructed of different? What about coating / finish?
Jay A on Jan 12, 2016
BEST ANSWER: The difference, other than the color, is the knobs. The knobs on the Rocker are plastic with a metal thread while the original Damstom Black clamps have metal knobs with a metal thread.
what holds down the opposite side from the clamp. ? does not look like there is a clamp there ??
ROBERT S on Nov 8, 2015
BEST ANSWER: There are two square vertical post with a stop on one side. Shown on the far side of the image. Place them at the far end of the wood you wish to clamp. The turn the adjustable clamp handle to tight and add pressure to the gluing wood. The clamp is also adjustable for different thickness wood. I have used the clamp several times and I am very happy with it.
How many total clamps are in the package? Does it come with just one clamp or two?
Terry B on Oct 30, 2017
BEST ANSWER: the price is for 1 clamp/ u need a minimum 2/i own 3 which handles just about anything i might run into/top
quality primary shop tool. joe/carpenter/50yrs/ret.
What is the max spacing of these clamps?
Duane H on Dec 4, 2015
BEST ANSWER: I have found that in a normal kitchen panel of 29" to 30" long
I have used one per foot with cull's. But with three or more board as in a butcher block top or cutting board I would go with one every 10" with cull's
Hi how much downward pressure do they provide?
Paul C on Mar 11, 2016
BEST ANSWER: Not as much as I would like to see. I always need to add a clamp at the back of the clamp to hold the
bars together and still not satisfied. Easier to use than the 2-way pressure clamp but like them better.
If you do a lot of edge gluing of long or wide material would not recommend.
Is both top and bottom parts considered 1 clamp ?
Brent C on Jun 4, 2016
BEST ANSWER: There are the 2 pieces in the kit. it clamps very well horizontally, but he back side needs 2 small clamps in the back to keep it nice and tight. Also if glueing up cutting boards you have to do alot of work to do to remove the glue squeeze out after you remove the clamps and if the piece is wide you will need a center clamp.
Does glue stick to the clamps?
Daryl R on Nov 13, 2019
BEST ANSWER: I used my clamps just today on a sideboard build, and strangely, ended up with a lot of squeeze out, literally all over my three clamps. Usually, I am quick to wipe off the squeeze out but got distracted today on a phone call for about an hour. Coming back to the build I found the hardened squeeze out running up and down my clamps. With a little warm water and a piece of orbital sandpaper (turned upside down) I easily removed the dried glue. Kind of like using a chisel but without a sharp edge. Truly these clamps are a brute and I love them completely. They clean up from most everything but certain stains, so be careful there. Otherwise, glue (typical woodworker's) isn't a problem at all. Great product. I have 8 of them now.
In the short video, as the clamps are applied, what force causes the seemingly rounded/cupped assembly to flatten out? Magic?
Doug S on May 30, 2020
BEST ANSWER: Once you have adjusted the clamp width to the width of the material at each end as you tighten cthe clamp bars will straighten and apply a squeezing force. Another option that may apply more positive pressure would be Rockler 4-Way Equal Pressure Clamp (item #20981).
Rockler 4-Way Equal Pressure Clamp
Rockler 4-Way Equal Pressure Clamp
is this for one clamp or a pair of clamps?
Don H on Sep 28, 2018
BEST ANSWER: I purchased two clamps. A clamp consists of 2 bars , a screw device and a square backing pin.
Just ordered 3. I'll have them in 3 days. Has anyone had issues with not putting enough down pressure? I make American flags and just hoping these cross bars dont bend.
PEKOP on Dec 10, 2019
BEST ANSWER: Cross bars won’t bend. I use these to make tables. Only problem. Make sure you use scrap pieces at each end. Will leave a in dentation on project when tighten. Also don’t over tight do each clamp turns equally at same time. Hope this helps.
Are they made in the USA?
Christopher F on Jul 13, 2019
BEST ANSWER: These clamps are made in Canada. They work very well.
are there longer Damstom clamps? can they be extended?
Scott A on Oct 19, 2016
BEST ANSWER: you want to get greedy with a revolutionary clamp/ make two panels/plate join/or go for length/vs width/i generally
use 1 clamp every 6-8" width. hope this helps. joe/carpenter/50yrs/rt.
i am gluing up 1 by boards 14 1/4" long, 57" long, 30 3/4" long &18 3/4" long.
How many clamps do I need on each?
Pappy on Jul 18, 2016
BEST ANSWER: I do t see any problem with any of the boards with the possible exception of the 57. Presume they are each separate glue ups. You might need two clamp sets side by side to do a proper job on those 57" pieces. Clamps are easy to use and do a nice job. Let set for about s half hour and remove squeeze out - will make finishing tasks easier and better. Hook luck,
I need one for 48 inch wide panel. Is there that size?
Frank A on Dec 12, 2017
BEST ANSWER: Not yet. Currently (Nov 2018) Damstom says they are considering a clamp in the 50-52" range. Hopefully they will release one soon.
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