Sigma's Hyper Sphere Weapons - Overwatch
thingiverse
I created it myself, so I eyeballed the sizes and made it look pretty good despite not having access to the actual models. The inner face of the orb matches the geometry I could see, although it's not perfect due to lack of information. The model is around 10cm in diameter, which means scaling will be necessary - probably down to about 25%. You can find the 60mm center "black hole" sphere included, but you might want to consider a better way to make the center more appealing. Additionally, I've added a single segment of the sphere, in case someone wants to attach magnets and create a detachable one.
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