The Impossible Wooden Knot

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Introduction: The Impossible Wooden Knot

About: If you like simple solutions then here you can find some of my crazy ideas.

There exist many of wooden knot puzzle, but this is
the only one, I know, made of 6 equal pieces.

It seems impossible, to put all these pieces together, but if you know the trick it is easy.

I made these puzzle out of scrap wood and the wood I used was Swiss Pine.

If you like it please, vote for it in the HOMEMADE GIFTS CONTEST 2016

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Step 1: How to Make Video

To get an overview, please watch the video

If you use a mobile device, use this link .

Step 2: Prepare the Pieces

All you need is a table saw and sandpaper or a random orbit sander.

Cut the pieces into the same thickness,
then cut them all to the same length.

Step 3: Cut the Notches

I made a little jig for my crosscut sled.
It is a piece of wood with 90° V-slot

On both sides, I glued a little piece of wood with a taped hole and a long screw.

I lowered the saw blade to the half of the diagonal of the square pieces
then I made a first cut somewhere in the middle of my jig.

The next step was trial and error. I made the first cut through a piece
on the left side and the second cut on the right side.

Then I turned it 180° and made another cut left and one right.

With the screws on both side I have reduced the error until I got
a perfect pyramid in the middle section.

Now , I cut many pieces all in the same way!

Step 4: Sanding

If you make only one puzzle, then sandpaper is good enough.
But I made many of them, so I turned my random orbit sander
upside down and sanded all the edges.

Step 5: How to Put It Togehter

The idea is, to make 2 groups with 3 pieces and then put these groups together

To make the first group, place one piece in the notch of the first one and a third piece from the side.

The second group is a mirror image of the first one

Take one group in each hand, hold it tight, and slide them together.

Step 6: Prepared for Christmas

I made all on one afternoon.

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    25 Comments

    my friend k'not beat this

    Excellent video: very clear how you make & solve this. Thank you. I also am interested in your eye-catching message device at the end of the video. Do you think you might ever make a tutorial on that? I have watched it many times now but cannot quite get it.

    1 reply

    Thank you. The best way to understand the machine is, to watch the video on YOUTUBE in fullscreen mode and in slow motion.

    I was wondering how you made that jig.

    Thank you! It doesn't matter how small or how big you make it. It is only important, that the pieces are square. My dimensions were: 20 x 20 x 73 mm

    I've always loved these

    Nice job, I'll have to give these a go! Thanks.

    very nice and useful instructable, thank you.

    Could you tell and explain about this machine at the end of video?

    how it works?

    3 replies

    Thank you. The best way to understand the machine is, to watch the video on YOUTUBE in fullscreen mode and in slow motion.

    StephanP1,

    its your own invention or you find a plan for this funny mechanism?

    Very Nice! Thanks for sharing!

    I like the message board at the end of the vid.

    great music.

    Marvelous little device! I'm definitely gonna do it; where'd you get the idea/procedure?

    1 reply

    The idea is very old. It is an ancient chinese or japanese puzzle. I found it in a

    book about historical games. The procedure is my idea. First, I tried it to use a hand saw but this is very hard, because you have to be very accurate.

    StephanP1 it's great. If you don't mind I'll be trying to make it for my children in Mexico. The detail measurements are on the downloadable file?

    Congrats again!

    1 reply

    Thank you! It doesn't matter how small or how big you make it. It is only important, that the pieces are square. My dimensions were: 20 x 20 x 73 mm

    Great little puzzle and they look great, I will have to give it a go. What were your dimensions of the wood pieces.