This is a functioning yoyo, as long as the infill is 15% or more, although the base part might need to be modified a bit if you wanna do tricks.
I also made a fancier version with opening compartments that can be viewed here. I may eventually put this version up on Thingiverse too, but in the meantime, feel free to contact us if you are interested.
As always, check out our Tumblr for more 3D printing adventures.
Size: 98mm x 98mm x 35mm
Print Time: 3 hours for each base, 45 min for spots, 8 min for center