An airboat for my calibration hamburgers based on an airboat I once received with a hamburger. No supports needed in the provided orientation. Parts’ suggested colors are in the file names.
For assembly some light sanding, glue and, clamping work well. I would not recommend gluing the peg in place, it’s the most likely part to break or wear and it works fine as a friction fit. A dry film lubricant on the inside of the propeller can help it to spin more freely. Support free burger designs are available at the following: https://thangs.com/designer/brian.grossmiller/3d-model/High%20Resolution%20Calibration%20Burgers-1412185 https://thangs.com/designer/brian.grossmiller/3d-model/Burger%20Ministers%20for%20Wedding%20Cakes-67886 https://thangs.com/designer/brian.grossmiller/3d-model/Calibration%20Cheeseburger-61596 https://thangs.com/designer/brian.grossmiller/3d-model/Calibration%20Hamburger-60235 CC BY-NC-SA