Food-safe filaments or standard resins are used to print the positive master model.
When looking for hardware "models" related to frozen treats, the current market is dominated by high-end home machines that turn frozen bases into "pie-ready" fillings. Ninja Creami Deluxe ice pie models
Ice pie models are wrong but useful. They gave early glaciologists a theoretical framework to understand why ice caps have the shapes they do, and they remain a powerful conceptual tool for thinking about how ice flows — just don’t bet the future of coastal cities on their numbers without a more sophisticated model. Food-safe filaments or standard resins are used to