Gripped Cable Reel - supportless

I really liked the original model but did not have a need to stack the reels. So I made some minor changes to the model, to allow the entire reel to be printed in just 3 parts with no support.

You will likely need a brim for the middle part, as it has very little area touching the build plate.

Changes:
* Combined parts for the bottom part and fused them together
* Added 45 angle for the top inner lip of middle part to allow printing without support
* Combined parts for the top part and fused them together