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Project by kiefer posted 11-05-2014 12:13 AM 6101 views 88 times favorited 34 comments Add to Favorites Watch

First of a big Thank You for all the replys on my last post !

This clamping system has been on my mind for some time and yesterday I set out to put it into reality as I started a box and thought I put and end to the frustation of clamping a box and still get the odd box that is out of square and have to rework it .
This clamp or clamping jig is a breeze to make and also minimal in cost aside from the Bessy clamp which I will use for other things anyway .
The design idea has several criteria which are simplicity, low cost ,accuracy ,visibility of the corners during clamping and smooth and accurate operation and no damage to the corners, I thing I have met that goal .

I started with some plywood squares cut perfectly square and pinned two of them face to face and layed out the three hole loctions and set up the drill press with a stop block to ensure all the holes where in the same location on all four corner pieces . This was followed by cutting out the right angle piece which contacts the box , the cuts were made with my table saw sled and have to be a perfect 90 DEG.
The steel pins are made from a piece of drill rod and the copper spacer sleeves are 1/2” copper pipe cut to lenght .
The copper sleeves serve a dual purpose as spacers and also as rollers to let the strap slide smoothly as clamping pressure is applied
The strap is nylon from a hold down strap and the clamping arms are again made from Baltic birch ply .
This clamp can be used on a multitude of box designs by altering the corner shape to accommodate dovetails or finger joints etc.
The box that I am making was cut on the sled also and I did a blog and video you can see here

I included some random pictures also and hope you find this interesting and enjoy the video .

Any questions and comments are always appreciated .


-- Kiefer

34 comments so far

View TechTeacher04's profile


325 posts in 953 days

#1 posted 11-05-2014 12:22 AM

Great idea, I have been searching for a cost effective way to get more box clamps for my students to use. Could you post a picture of the 2 clamp bars from the side, I plan on making one tomorrow and am curious how much material is left at the bottom. Thanks for sharing.

View peteg's profile


3806 posts in 2244 days

#2 posted 11-05-2014 12:25 AM

Man this is a well thought out tool, cleaver stuff Klaus, bet a few will be of to the shop to build their own version :)

-- Pete G: If you always do what you always did you'll always get what you always got

View DocSavage45's profile


7656 posts in 2264 days

#3 posted 11-05-2014 12:54 AM


And when you do it I’m sure it’s square. I used that nylon strapping as webbing on my sofa last year, there is stretch to consider?

-- Cau Haus Designs, Thomas J. Tieffenbacher

View kiefer's profile


4873 posts in 2088 days

#4 posted 11-05-2014 12:55 AM

I hope this is what you are looking for .
Let me know and also watch the video .


-- Kiefer

View Jim Sellers's profile

Jim Sellers

394 posts in 1756 days

#5 posted 11-05-2014 12:58 AM

Nice idea and design. Thanks Klaus. This will surely be a great addition to my tool/jig addition in the very near future.

-- J.C.Sellers, Norcross, Ga. Just cut it right the first time. The best carpenters make the fewest chips.

View CL810's profile


3405 posts in 2410 days

#6 posted 11-05-2014 01:05 AM

This is great! Favorited.

-- "The only limits to our realization of tomorrow will be our doubts of today." - FDR

View gfadvm's profile


14929 posts in 2111 days

#7 posted 11-05-2014 01:07 AM

Great invention. You better patent it or Rockler will have them for sale before Christmas!

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

View kiefer's profile


4873 posts in 2088 days

#8 posted 11-05-2014 01:31 AM

They are too easy to make and I won’t waste more money on a patent ,I have one on my Dowel Tail system and will never make money of it just a waste of time .
If I approached a manufacturer they would just tell me that they already have something similar and will marked it soon .
Just make one for yourself and don’t wait for a manufacturer .


-- Kiefer

View PioneerRob's profile


41 posts in 1033 days

#9 posted 11-05-2014 01:55 AM


-- Rob, Ontario

View shipwright's profile


7094 posts in 2219 days

#10 posted 11-05-2014 02:45 AM

Good looking clamp Klaus. I use a ratchet version from HF that is very similar ….. but yours is free and very efficient.
I also like yours just for being shop made. Good elegant tool making, thanks.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees.

View Woodbridge's profile


3451 posts in 1839 days

#11 posted 11-05-2014 02:56 AM

great idea and a cool shop made solutions to clamping boxes and keeping them square. Thanks for sharing that with us.

-- Peter, Woodbridge, Ontario

View  woodshaver (Tony)  's profile

woodshaver (Tony)

3938 posts in 2774 days

#12 posted 11-05-2014 03:04 AM

Gee wiz more good stuff from Kiefer! I see you have been busy brain storming and inventing good things again. This is a really useful idea you have created Klaus. Looks like a nice way to clamp up a box. Nice work!

-- Tony C UAW, St Augustine FL, My high school shop teacher said "You can do it"... Now I can't stop!

View Rick M.'s profile

Rick M.

7713 posts in 1801 days

#13 posted 11-05-2014 04:16 AM

I like it much better than a ratcheting system.


View Hawaiilad's profile


2885 posts in 2442 days

#14 posted 11-05-2014 04:55 AM

Oh yea I can see making a few of these are in the picture real soon…sure beats the all the clamps I used the other day on those 6 tissue boxes I made. thanks for the great idea and the step by step instructions help allot

-- Larry in Hawaii,

View doubleDD's profile (online now)


5066 posts in 1465 days

#15 posted 11-05-2014 05:40 AM

Klaus, that’s a great little idea there. The serpentine strap wrap seems to be the trick. I also use the ratchet version from harbor freight but this looks more versatile. Well done.

-- Dave, Downers Grove, Il. -------- When you run out of ideas, start building your dreams.

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