What is 3-D chocolate printing?It is like "normal" 3-D printing, but we use chocolate. We have specialised in chocolate decorations for cakes. What exactly do you do at work?I design and build 3-D printers. It started with a modified plotter that built models with superglue. Icing-sugar models followed, then chocolate. This was followed by plastic models, cement, icing sugar again, and then mealiepap! The latest is ceramics.You were a Formula One engineer first. Why 3-D chocolate printing?The 3-D printer that works with superglue was developed while I was an aerodynamicist at Brabham Formula One, and was used to build model parts to test in the wind tunnel. Brabham folded, and I was forced to return home. Fast-forward to today, and the superglue was substituted with icing sugar, and then chocolate. How do you prevent your chocolate creations from melting?There is no special trick; we just have to take extra care to keep our structures in cool areas. Elaborate deliveries are alway...

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