Customizable Coin Flip - Rigged to Always Win!
Print Profile(1)
Description
Never lose a coin toss again! This is a fully parametric, customizable trick coin designed to always land on the side of your choosing. Using the clever physics of a shifted center of mass, one half of the coin is printed completely solid, while the other half contains a hidden, airy cavity. When flipped, gravity takes over—forcing the heavy, solid side down and making your chosen "winning" face land pointing up.
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Whether you want to settle a debate with a "YES / NO" flip, rig a game of heads or tails, or just show off a cool physics trick, you can generate the exact coin you need.
Features
- Custom Text: Easily engrave your own text on Face 1 and Face 2.
- Standard Coin Presets: Includes built-in dimensions for popular coins (1 EUR, 2 EUR, 50 Euro Cent, US Quarter, US Half Dollar, UK 1 Pound) or dial in your own custom dimensions.
- Select the Winner: Simply choose which face you want to win, and the model automatically calculates the hollow/solid geometry to make it happen.
- Optimized for FDM: Features a built-in 0.6mm cross-support inside the hidden cavity to ensure your top face prints perfectly clean without sagging.
How the Physics Work
The coin uses a fixed 0.6mm thick top face and an outer rim of 1.2mm for strength. Inside, the bottom 46% of the coin is solid plastic, acting as a heavy anchor. The upper half is mostly empty space supported by a thin cross-hair. Because the bottom is significantly heavier, the coin naturally wants to land with the heavy side facing the floor!
Crucial Print Settings
To make the weight-bias trick work flawlessly, the slicer settings are extremely important. You need the solid part to be as heavy as possible!
- Layer Height: 0.1mm (Crucial for getting enough solid layers in a thin coin).
- Line Width: 0.4mm (Matches the internal support structures perfectly).
- Infill Density: 100%
- Infill Pattern: Rectilinear (Ensures the heavy half is completely dense).
- Wall Loops (Perimeters): 3
- Top/Bottom Shell Layers: 3
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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