Rock Solid IPhone 4 Bumper

by MINIFACTURE, published

Rock Solid IPhone 4 Bumper by MINIFACTURE May 6, 2012


Liked By

View All

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.

Print Thing Tag


Thing Statistics

12603Views 1444Downloads Found in Mobile Phone


This thing is obsolete. Check out the newer version at http://www.thingiverse.com/thing:24734
Super tight, rock solid bumper for IPhone. No wobbling, shaking, cracking whatsoever.
Over 40 trials to bring you the perfect product!
Check out my blog at
Supplied G-code is with these settings:
Layer 0.15mm
Temp 208'C
Feed 60mm/s
Traveling speed 400mm/s
Machine center 80 * 130
Nozzle size 0.4mm
Filament 2.89mm dia
Fill 100%


This thing is obsolete. Check out the newer version at http://www.thingiverse.com/thing:24734
Print with PLA. You can use supplied G-code or make some adjust if you wish.
WARNING : There is almost no space between the phone and the bumper and requires some force to fit so be careful not to break anything such as power button, vibrate switch, your finger or IPhone.
Print with fill greater than 80%, I've done with 100%. Otherwise horizontal layers won't stick in thinner parts.
Now the important part - refer to the pictures if unclear:

  1. Lay down the bumper and IPhone with the back panel up and volume/vibrate buttons facing away from you.
  2. Bottom left corner of the bumper (after step 1, bottom left corner is now on the right and facing towards you) has reduced overhang. Now lay the bumper down and fit your IPhone from up(as in from the air). Fit and align 3 other corners very tight.
  3. Slowly push in the bottom left corner until it's in place. You should hear a "click" sound. Make sure other 3 corners are still in place. Check the screen side(front) as well.
  4. If it doesn't make its way easy then tap it with your hand gently but firmly. It may require some force to push in. Once it's in, it should feel rock solid.
  5. To take it off, hold your IPhone and push the bottom left corner from the back to the front, with both thumb until it pops out. Once it's been in and out, it should be easier to fit.
    Still confused? Watch this video how I did it.

More from Mobile Phone

view more

All Apps

Auto-magically prepare your 3D models for 3D printing. A cloud based 3D models Preparing and Healing solution for 3D Printing, MakePrintable provides features for model repairing, wall thickness...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

Quickly Scale, Mirror or Cut your 3D Models

App Info Launch App

I tried printing one of these tonight and ran into some problems. I think the case is just tad too tight- when I tried to fit onto my iPhone I was able to fit around the first three corners easily but I couldn't even fit the fourth one over the first lip. I was able to force it with some pliers but ended up splitting the corner between layers in the process. I'll try stretching your file a little in its length and see how that works out for me.

Yeah, Print it with 1.01x scaled might work easier for you. When tapping the 4th corner in you definitely need some level of force but make sure you don't break anything. I think every machine has a slightly different resolution in an indistinctive way in normal situations but this is probably one of the few cases some might for for some while others don't. Let me know how it went.

So I tried 101% yesterday and that was too big haha. At least I have a range for testing now right? I think I'll be able to try 100.5% and some others today to get the perfect fit.

I suggest you hold 3 corners very tight before fitting in the 4th. checking all 3 corners in place is crucial. Good luck! :)