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by lnsru 534 days ago
It’s not a single sheet. It’s multiple sheets covered in gypsum shell. More sculpture than drywall. Relative worked for riches, egg and bells were his projects 25 years ago. It’s just many many hours designing it and even more sanding to get perfect shape. There are now 3D printers for such projects: https://www.voxeljet.com/3d-printing-solution/sand-casting/ Since it’s cheap and fast today riches lost interest.