Hexapuzzle

The easiest way to print modules in a single perimeter, spiral, but if you cannot get thick enough wall, it is possible to print in multiple perimeters, putting the filling on 0 and the upper layers is also 0.
You can scale maintaining aspect ratio X/Y.
Cut on Z is not necessary - you can just stop printing when the module grows to the desired size.
Ideal for those who don't know what to do with the small pieces of filament or gathering dust idle samples.