Biased Dice

Here are some biased dice. I have yet to perfect the design and I am working on what to do with the corners of the dice and the underside. They should vary in how biased they are although currently they are all biased to land on 6. The percentage in the STL file name refers to how much of the internal space is filled.
So "50" will be the most biased and "6.25" the least biased.
I printed them with 100% infill and had no problem with bridging the gap when building the top layers. I printed them without any support.
I will upload some more die (weighted to each number) once I have done some more analysis of the probabilities. There is still a lot to do so I welcome any advice and comments. Enjoy!