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https://www.thingiverse.com/thing:2438671
iPhone 7 Case "dotty" by ScottyMakesStuff is licensed under the Creative Commons - Attribution - Non-Commercial - Share Alike license.
http://creativecommons.org/licenses/by-nc-sa/3.0/

# Summary

I had a request to remix my iPhone bumper case into a full case with a back so here is my dotty version. I designed it this way so that the case back protects the back while all the cutout dots allows it to thermo-regulate better than a standard case. The back also has openings for your camera and flash and protrudes just far enough to protect the camera from scrapes.
You shouldn't need to clean up the print as it comes off very clean. The attached video is from the bumper case I made but it's the same except for the added back.
The other benefit of this case is that it fits both the portrait and landscape stands I made for that bumper case;-

Portrait Car and desk stand:
https://www.thingiverse.com/thing:2431699

Landscape Car and desk stand:
https://www.thingiverse.com/thing:2431698

The original iPhone bumper can be found here:-
https://www.thingiverse.com/thing:2431697

Make sure you read the "post printing" section before putting it on your phone.

You can check out my other designs here:-
https://www.thingiverse.com/ScottyMakesStuff/designs

# Print Settings

Printer Brand: Prusa
Printer: Prusa Mk2
Rafts: No
Supports: No
Resolution: 0.15
Infill: 25%

Notes: 
No need for a brim as there's plenty of bed contact. I suggest PLA though most plastics will work. Most modern PLA's are tough & flexible enough to take a bit of flexing.

# Post-Printing

It has a nice gentle chamfer so there shouldn't be any need to clean up the print if you print it as is on its back. Just remember that although your PLA might be tough it's normally not as flexible as the rubber cases you might be used to... so take a bit more care getting it on.
It's designed to fit in bottom first, sliding in and then gently easing the top in until it snaps into place. Take a look at the end of the bumper video (at 2:40) below to see how it's done.

<iframe src="//www.youtube.com/embed/5wxyn2vClO0" frameborder="0" allowfullscreen></iframe>
This is from my bumper case but if you look close to the end (@ 2:40) you'll see me demonstrate how to put the case on your phone