Magnetic + Qi-Ready (Wireless charging) Add-on for CMF Phone 2 Pro

This is a custom backplate add-on designed for the CMF Phone 2 Pro.

It allows you to add wireless charging using an external Qi-to-USB-C adapter (these are cheap and widely available online).

In my build, I trimmed the foil surrounding the adapter to provide better clearance and fit within the print.

A second version is also available for download, which replaces the wireless charging slot with a 37mm round magnet pocket – ideal if you prefer to use it with a magnetic phone holder only.

Materials & Print Info

• Filament:
  – Light Marble PLA by DevilDesign
  – Orange PLA (supplier unknown)
• Printer: Elegoo Neptune 4 Plus
• Multi-material support:
  The logo is a separate STL component, so it can be printed in a different filament using multi-material or filament swap.

Here are some iterations:

Recommended Print Settings

This model was designed with fine details aligned to layer heights that are multiples of 0.2 mm.
For best visual fidelity and clean top surfaces, it's highly recommended to print at 0.2 mm layer height.

• Layer height: 0.2 mm
• Wall type: Precise Wall
• Wall printing order: Inside–Outside–Inside (IOI)
• Infill: 15% Gyroid
• Supports: Normal, manual
  – Supports should be placed under nearly the whole model
  – Important: Print with the logo facing up, so only the screw holes touch the build plate
  – Be careful when removing supports around the holes – they can be brittle

The add-on is the same thickness as the camera bump, eliminating wobble when placed on a flat surface.

The left and right parts in the photos show different top surface patterns:
– Left: Monotonic line pattern with ironing
– Right: Archimedean chords

One final design touch:
While Nothing uses concentric circles in its industrial design, I opted for a spiral top pattern, which prints cleaner and reduces seam artifacts.