I'm using my QuadLock on a motorcycle and don't need the actual ring, this still works with the QuadLock wireless charger. But since it does not have the metal / magnetic ring inside it won't stick to a magnetic desk charger, but would still charge on desk wireless charger that can hold the phone in place. I recommend a smooth PEI plate and I've used Hilbert Curve bottom surface pattern against the bed some smooth almost holographic patterns with PLA Silk filaments.

A second print profile is added for a ring with magnet slot. You can pry the ring of magnets from the original MAG Ring from your QuadLock case and transfer it to this model. I've used a flat and pointy needle file to lift the ring of magnets off, they are held by a sticky tape. It might help to heat the ring up with a hair dryer to soften the adhesive. Disclaimer: I can't be held responsible for any damage during this process.