Quick follow-up for anyone thinking about building the pyramid at home. Laser-cut copper is one of the most expensive parts of the build, so I've been looking for a way to bring the cost down, especially for those of you who have your own CNC router, or a friend who has one. The idea is simple. Take 0.3 mm copper foil on a 30 cm roll, glue it with slow-cure epoxy onto 3 mm PVC foam, and mill the Sierpinski faces directly on the CNC with a 2 mm single-flute end mill. The PVC foam is non-conductive, so it becomes the panel itself. Copper and backing are made in one piece, and that's one of the biggest savings in this whole approach, because you don't need to buy separate backing panels. There is one compromise: we go with 5 iterations of the Sierpinski gasket instead of 6. The sixth level would roughly double the cutting time and push the tiny triangles close to the limit of the end mill. So we give up one level of detail to make the build practical and affordable. On a 30 cm roll, a Giza-proportion face comes out at about 358 mm at the base, which is about 97% of the original design. The triangles nest up and down along the roll, so there's almost no copper waste. Here's a rough idea of the cost. These are my own estimates, and prices will vary. The copper foil is bought by the metre, and one metre of the 30 cm roll gives you about five triangle panels. So the copper for one single triangle panel, including shipping and VAT, comes to around €4–8. Foam, epoxy, tape and tool wear add another €2–3 per panel. Machine time is about 45 minutes to an hour for each panel. I've put labour at €10 per hour, but that's just an approximate figure so you can picture the total. With it, one finished triangle panel comes to around €16–21. A desktop pyramid has four of these panels, so all four faces together come to around €65–85, without the corner profiles. For the big pyramid, about 1.8 m tall with 108 triangle panels, you'll need around 20 metres of the 30 cm copper foil. Copper rolls usually come in 20 metre lengths, but that leaves no room for test cuts or mistakes, so I'd recommend ordering about 24 metres to be safe. For the whole pyramid, the materials (copper, PVC foam, epoxy and tool wear) come to roughly €700–1,100. If you count labour at that approximate €10 per hour, with about 80–100 hours of machine time, the total comes to roughly €1,500–2,200, not including the corner profiles.

@Billy Liao try this one

@Fluxite Fluxite Here is what one friend find out after his curiosity was triggered too

@Fluxite None Rugh now is 1.3 meters in diameter made out of hydroforming. But Im receiving new information and the very truncated cuboctahedron can be used as resonating chamber too. But there are pros and cones about this its like trade of the different shapes give different advantages.

@Fluxite None Love this suggestion, thank you! Sound is definitely part of the plan. Bashar has explained that C sharp, or a tone slightly above it, can amplify and magnify any permission slip, especially structures built on golden-ratio (phi) or square-root-of-two proportions, which is exactly what this pyramid is. In his view the pyramid itself is a permission slip, a tool that gives us permission to shift into a different experience. And since experience is what’s real, the ultimate permission slip is always our own choice. Pairing the two feels like a natural fit. 🙏

Here’s the latest version, now with the octagonal shape, like the Great Pyramid of Giza. Each face isn’t flat: it is folded very slightly inward along its centre line, by φ² = 2.618° in total. That turns the 4 faces into 8, just as at Giza, where the concavity only shows at certain angles of sunlight. This turned out to be one of the biggest challenges of the whole design. I wanted all 108 copper panels to stay identical. But when you fold identical rigid panels inward, the geometry fights back: each base edge becomes a shallow V. The middle of every edge touches the ground, the four corners lift about 25 mm, and the edges also bow about 32 mm inward when seen from above. So we redesigned the base: 🔸 We removed the flat base ring completely. It no longer fit the folded shape, and it would have forced us to cut the bottom tubes lengthwise. 🔸 We designed 32 V-shaped 3D-printed spacers (black ASA) that cradle the bottom tubes along the edges, tapering from about 25 mm at the corners down to about 3 mm near the middle. No gap shows anywhere, and the V shape locks the pyramid in place so it can’t slide sideways. The build: 1.8 m tall with Giza proportions. 0.5 mm copper panels sit on a black printed layer over a 20×20 mm fibreglass tube frame. Printed connectors press-fit into the tubes with crush ribs, so no glue is needed. Every screw and nut is nylon: no metal except copper. In these renders it stands on a Japanese cedar deck in a garden. The close-ups show the fractal perforations and the joints. Next: sound, a C sharp tone to amplify the space. 🙏

@Ian Mitchell Thank you Ian!

@Fluxite Fluxite Last time we paid 17$ per Triangle from Alibaba but that was long time ago I will drop here one STEP file for 5 itteration sierpisnki gasket fractal 0.8mm copper sheet fo you can upload it on https://www.pcbway.com/ or https://jlccnc.com/ and see instant price depending of the quantity. Here is also a screenshot for your instant reference. I think this price is extreemly good for this 32 pieces and the copper is 101 high conductivity grade. Perhaps 6 iterations will me more expensive let me know if you want and I will make another STEP file. Just to know that the size of this triangle is 204 this is to get Merkabah with 496mm diameter tip, so smaller perhaps will be cheeper. I have receive 100$ bonus from Antropic and have plenty of tokens now so let me know if you need help to make a part as STL or STEP file, now can do anything we can imagine. Just finish a project for a friend who wanted to create something after listening the sound protocols its a mini version of the STA and tetrahedron mold he wanted to embed inside, but I invite him here if he wants to share more about it.

@Keith Toussaint Thank you so much for your words they mean a lot to me Keith, you are coming just on time now we can do anything on 3D and soon as electrical circuit as well just by talking. Let me know if you have anything you want to know or need help in some way. Now will drop a video and 43 pages PDF of how we can actually build this STA in a new way, something else is coming too that keeps me awake at night, but need to ask Darryl for permission 1st.