Assembling the last pieces was difficult. If I did it again I’d loosen up on my tolerances to make it easier to build. Total of 36 pieces of 1/8” Baltic birch. No glue. Very sturdy, could easily be adapted into a light shade. This sort of structure could scale very well, could probably triple in diameter without going to 1/4”, after that weight might be an issue. Slot geometry is tricky to work out, but worked on the first try.
Interestingly, the least sturdy axis “along the cylinder” (vertical compression in the pictures). It can compress pretty easily, and I would imagine you would crack the wood with a surprisingly small amount of force.
Gluing might… a stabilizing ring inside at the “waist” definitely would. Basically you need to convert it to triangles instead of diamonds, and a slotted ring at the waist that interlocks with the model would do it. Might be worth a try if I return to the project.