Have you just got a new phone you're looking to protect, or are you looking to give your current device a new look?

While most would be happy with a generic, run-of-the-mill phone case, we in the 3D print space have the tools to add personal touches and creative customizations to create the perfect phone case for our needs.

What do You Need to Customize a Phone Case?

3D Printer and Filament

The type of printer and filament you choose can have a big impact on the durability and flexibility of your phone case.

For most cases, an FDM 3D printer is the easiest and most accessible option, though resin printing can also produce highly detailed cases with a smoother surface finish.

Filament choice is equally important. PLA is the easiest filament to print with and is cost-effective, but it lacks flexibility and impact resistance, making it less ideal for phone cases.

PETG is a better alternative if you want a more durable yet rigid case.

However, for the best phone cases, TPU (thermoplastic polyurethane) is highly recommended, as it is flexible, impact-resistant, and offers a more traditional phone case feel.

TPU requires slower printing speeds and specific slicer settings such as tuning your retraction and cooling settings, to ensure good adhesion and flexibility, but the extra effort is well worth it.

3D Model

Before you can print your case, you'll need a 3D model of it.

The first and easiest way to get started is by downloading a phone case model from 3d model websites like Thingiverse, Printables or Make It Real.

These platforms host thousands of free designs, including minimalist cases, rugged cases, and cases with built-in stands or grip features. Before printing, make sure the model is compatible with your phone's dimensions and camera cutouts.

If you choose to design your own, you can start with an existing case model and edit it using some good CAD software for 3d printing such as Fusion 360, or Blender. Simple customizations like adding text, logos, may even be able to be achieved in your slicing software such as Ankermake Studio

How to Make a Phone Case: Step by Step Guide

Step 1: Design Your Phone Case

For those who want a unique design, modifying or creating a phone case from scratch is the way to go. You can start by editing an existing model or designing a new one in Fusion 360, Blender, or Tinkercad. Customization options include:

• Adding a textured grip for better handling.
• Incorporating a name, initials, or logo into the design.
• Adjusting button cutouts and camera holes for better usability.
• Creating a multi-material case by designing interchangeable layers.

Once your design is ready, export the model as an STL file and prepare it for slicing.

Step 2: 3D Print Your Custom Phone Case

After finalizing your design, it's time to print! Load the STL file into your slicer software, such as AnkerMake Studio and adjust the settings based on your chosen material.

If you're printing with PLA or PETG, standard print speeds and temperatures will work fine. However, if you're using TPU, lower print speeds (15-30 mm/s) and minimal retraction settings are necessary to prevent filament jams. Ensure proper bed adhesion by using a PEI sheet or applying a glue stick for extra grip.

Print orientation also matters. Most phone cases are printed flat on the build plate for better bed adhesion, but some models with intricate side details may benefit from being printed vertically with supports.

Step 3: Finishing Touches

Once your phone case has finished printing, some post-processing may be needed. If printed in PLA or PETG, light sanding can help smooth out rough edges. TPU cases generally don't require sanding, but trimming any stringing or over-extrusion with a sharp blade can improve the final look.

For extra personalization, you can apply vinyl decals or hand-paint designs onto the case. Laser engraving is also an option for adding permanent text or patterns onto hard plastic cases like PETG or PLA.

Related Guide: How to Smooth PLA 3D Prints

How Long Would it Take to 3D Print a Phone Case?

3D printing a phone case typically takes 2-5 hours with standard printers (e.g., FDM), based on design complexity. Large/intricate cases may take up to 12 hours. Post-processing (sanding/painting) adds 1-3 hours.

What is the Benefit of 3D Printed Phone Case?

There are many benefits to 3D printing your own phone cases.

Firstly, some less popular phones or older models can be hard to find, so with 3d design and printing, you can get the perfect fit and shape for your phone and needs. 

A second upside to printing phone cases that you might not consider is that they could also be cost-effective, especially if you're someone who likes to change up the look of your phone frequently with a basic design printed out of PLA potentially costing as little as 50 cents of material or less.

How to Ensure Your Custom Phone Case Fits Perfectly

To ensure a perfect fit, always double-check the model dimensions before printing. If you're downloading a pre-made file, verify that it matches your phone model.

If designing from scratch, use vernier calipers to measure your phone's width, height, thickness, and camera cutouts accurately. Printing a test case with minimal filament can help confirm the fit before committing to a full print.