I never play loto but a friend of mine challenged me to make a dice with 49 faces. After a few tries i found a way to do it but modeling this manually is fastidious and i had to restart from scratch each time i changed the design.

Then i decided to make a Blender script to generate it. This script allows to generated a dice with any number of faces. The faces can be engraved like the one i'm publishing here but they can also be inlaid in the dice. This later design needs a transparent filament in order to see the numbers.

EDIT 2016-09-25: I finally installed a diamond hotend on my Hephestos and printed it in bicolor black/white. See the video: https://www.youtube.com/watch?v=XpcJkaysb3Y