Hallowing Case with Improved Attachment

I wanted to use the Hallowing Case from Adafruit with the remixed back from DoctorWhich, but wanted a more secure attachment than the original had. This remix changes the way the front and back pieces snap together to hopefully make it more resilient.

Unfortunately my printer is down for the moment, but wanted to get this up since Halloween is almost here. I'll upload photos of the prints as soon as I'm able.

10/23/18 - Revised to correct some minor errors. Added a version with stronger loops.
10/24/18 - Added a version with horns for the loops