Help figuring out proportions of 3d Illusion

I watched a video about making a 3d illusion in wood on youtube. I used the dimensions the video showed but I just cannot wrap my head around how the dimension/proportions work.

Here is what I am trying to create.

The video cut the angles at 30 degrees and then glued up 3 strips of wood and then cut them off and arranged them into the 3d illusion pattern.

Can someone tell me the proportions of making this 3d illusion?

Using the dimensions of 2.5" long and 1" thick just does not seem to work.

I found this image on google but there are no dimension/proportions.

Ah Ha I figured it out.

I created a rhombus at 60 degrees and then copied it for a total of three. Then rotated each of the other two at 60 degrees.

I was searching on google and AI was no real help. Then I searched images and found an example that said all 4 sides had to be equal length. The light bulb came on. This was driving me crazy trying to figure out how to make this. Now on to cutting it and making a 3d illusion with oak, cherry and walnut.

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Dang, you beat me to it.

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Thanks for your effort. Sometimes I get a bug to figure something out and it drives me crazy (which is not far to go).

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Sorry been out of the house all day but i did this one, it was easier on the miter than cnc to me though. Just pay attention to grain and that helps a lot with the 3D look

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Thanks. I was likely to do this on the tablesaw. I was using CC to check the dimensions. I did find a calculator online to help but to get 60 degree angles it requires some rather precise width pieces.

I agree that trying to cut this out on a CNC would be wasteful and time consuming. My goal is making bottoms for segmented vessels on my lathe. I often use CC to draw up things.

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Just to follow up on this post I figured it out and of course I was over thinking it. I built a sled at 30 degrees. You pick your width of the boards and make a single cut. Measure the distance across the cut and set a stop to get that exact distance.

Here is the test cut held together with a rubber band. The final will be maple, cherry and walnut. After getting this together I will use my Shapeoko to make several things.

The width of all the different species need to be the exact same width and the same thickness. Gluing the pieces together is the next challenge. A youtube channel called Papa1947 has done several of these type of 3d illusions.

With the same sled I can make trapezoid and parallelograms and combine the three shapes to make some interesting 3d illusions.

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@gdon_2003

Nice, clean joints! Well done.

I got one example glued up. Before glue up it looked good but during glue up it skewed a little. Live and learn.

The star is the one I glued up.

The left one is rhombus (diamond), trapezoids and I have some parallelograms cut but not integrated yet.

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Beautiful work.

My wife is a quilter. This is the same geometry patterns.
She is attending the American Quilting Society (AQS) show in Hartford, CT this week.

She sent me a couple pictures.

The geometric patterns and overlay stitching would be a challenge to duplicate in woods.


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Quilting and scroll sawing patterns have a lot in common with CNC designs.

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@jtclose

WOW! Simply amazing patterns….

Looks like inspiration for a cutting board.

I finished up a 3D looking cutting board this afternoon. Both pictures are of the same board just two different angles.


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Nice. I have been working on 3d elements and am just fascinated by the optical illusion. How did you glue it up? Did you do sections or just glue up the whole thing at once?

Each square is made up of 4 boards glued together to make a total of 8 boards. Those boards were glued to each other then cut and flipped for a final glue up. Tons of room for error on this one.

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