Hi Guys
Should i add support if i want to 3d print a sphere on an FDM ?
No support but add brim
Or print in two halves and glue them afterwards. You can use an asymmetric series of matching holes and put little pins in them if you need perfect registration.
It may need something near the bottom where the overhang is really high
Thank You 
Use mesh mixer… It will add little support fingers where needed
Thanks