tripod ball joint

A replacement ball joint for the Tzumi and other related tripods.

*Important notice*: The hole where the leg connects to is slightly edited for a possible tolerance error within the metal of the leg. The part is the bottom of the hole is slightly larger than the entry hole. This was done because one of the tripod legs didn't slide all the way down and when I opened the bottom up a bit it was able to slide all the way in (+0.01" of the radius, +0.02" diameter it's not much added but I just want you to know this before you print if you'd rather get a nice uniform hole). My fix to this edit is just to use some glue on the tip of the leg to stick to the inside in case you had a similar incident like mine where one leg might not go in all the way. Other than that it prints perfectly fine with supports.