A better D4

D4 are the worst : they don't roll well and the result can be hard to read because there is no face facing up.
So i designed a D4 that don't have those drawbacks.

I made two version : the normal one works fine but is bigger and less elegant and the smaller one is more beautiful and rolls more.

I printed them in PLA and painted them. It worked well that way but it would probably be even better with a resin printer. Be aware of your bed leveling before printing : the elephant foot effect could ruin the random distribution (effectively loading the dice). Scaling the model up might help with precision.

I rolled them 100 times to see if you have more chance to get one number than another and found the highest and lowest count being 29 and 23 (to compare to the expectation of 25) which seems ok to me.