Help figuring out proportions of 3d Illusion

gdon_2003 · March 22, 2026, 4:07pm

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.

gdon_2003 · March 22, 2026, 5:02pm

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.

jtclose · March 22, 2026, 5:04pm

Dang, you beat me to it.

gdon_2003 · March 22, 2026, 5:06pm

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

TonyMurray · March 22, 2026, 11:05pm

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

gdon_2003 · March 22, 2026, 11:37pm

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.