Koi Stack – Balance Game

Want to sell prints of this model? A commercial license is available on my Patreon: https://www.patreon.com/Elizabeth3D Like my free models? Support me on Ko-fi: https://ko-fi.com/elizabeth3d Koi Stack is a stacking balance game with a color die: twelve chunky koi fish in twelve swimming poses, and the die tells you which one goes on the tower next. Design Concept Four real single-color koi varieties, three fish of each: red Benigoi, gold Ogon, black Karasu and white Platinum. The koi hook and lean on each other as the tower grows, until it wobbles and comes crashing down. Purpose A family game for 2 to 4 players. Kids can play it without the die. How to Play - Setup: roll the die and lay one koi of that color flat on the table: that's the base of the tower.

- Take turns: roll the die and stack one koi of that color anywhere on the tower: flat, on its edge or hooked on another fish.

- Pink face: free choice, stack any koi you like.

- No koi of that color left? Roll again.

- If any koi falls off on your turn, you lose. All twelve koi on the tower? Everybody wins: mix them up and play again.

- Kids variant: leave the die out and stack any koi you like.

What's in the Box - 12 koi, all exactly 20 mm thick and about 70 mm long, with scales, gill and eye engraved on both faces.

- 1 color die (25 mm): a grey body with six press-fit discs, four colors on the sides and two pink free-choice faces on top and bottom.

Print Settings - Printer: printed on a Creality SPARKX i7, 0.4 mm nozzle. Material: PLA. Layer height: 0.20 mm. All inside the 3MF, set with the Creality SPARKX i8 0.4 nozzle system profiles: just open it as a project

- One color per plate: no filament changes and zero purge waste, so you don't need a multicolor system to print it in full color

- Plates 1 to 4: three koi and the die disc of their color, in red, gold, black and white. The koi print flat on one face, with no supports.

- Plate 5: the grey die body, with one of its free-choice sockets down; supports only inside the bottom socket (pull them out with tweezers).

- Plate 6: the two pink free-choice discs.

- Keep the walls and infill set in the 3MF: they change how much each koi weighs, and so how the tower balances

- Do not scale the die: the discs have 0.15 mm of clearance at 100%

Assembly - Remove the support from inside the bottom socket of the die.

- Press the four color discs into the four side sockets, and the two pink discs into the top and bottom sockets (opposite each other, so the die stays balanced).

- If a disc feels loose, add a tiny drop of glue. The koi need no assembly.