Title: Fair 7 sided dice - D7 - Design and 3D printing. Watch on youtube: https://youtu.be/9L2miom1Oso
Another very mysterious dice - the 7 sided die (D7), pentagonal prism, is it a fair die? Will it equally land on pentagonal base and rectangle sides?
In this video I am designing, 3D printing and testing seven sided die with geometry of pentagonal prism.
Base edge of pentagon is 15mm and length is 19.2 mm, all edges are with 1mm chamfer.
Bonus: the real fair D7 is a heptagon based prism with rounded base sides, but this time with days of week on it (instead of numbers).
Both STL files from video can be downloaded below this text.
*UPDATE: 2020-05-22: Fair D7 with numbers added (not weekdays)