Seeker Mine- The Division *!Sphero Edition!*

Hey! So, someone on my last design of the Seeker Mine from The Division said it would be cool to make it a cover for a Sphero... so I did! I not only uploaded this because of that, but I noticed some flaws in my original design and wanted to fix them. I realized that the Seeker Mine in The Division was a solid ball with treads, so I completely took out the cylinder I had in between the two hemispheres and made it into a sphere with treads. I hope you enjoy this version and comment if you need any help or need me to do something!

UPDATE!
I have shrunk down the size of the shell by a lot. So, it will work more successfully with a Sphero. Hope you enjoy! The file will say "Seeker Mine Sphero- Smaller."

Thanks!
printingperson