Mega prims - cubed

Hi there,

I have done a few builds with prims but am very new to mega prims. I need a giant sphere as the outer "case" of an art installation I am working on. I'll be setting it up so that people can walk inside it.

I have a huge set of mega prims (7000 of em!), but all are rectangular. When i modify them to make a sphere i end up with a mellon shape. So i figure i should be using prims with the same dimensions on all sides so that i end up with a sphere.

Hard to know the exact size I need until I try it out - but has anyone got, or know where i can get, mega prims of maybe 25x25x25 or 30x30x30?

Cheers,
Carmsie

Plenty on Xstreet for free or get the SALT hud.
Ceera's are a nice group of megaprims.
Dropped them on you.