So I noticed that Peak Design Mobile Adapters have screwed-on back plates so I made this custom back plate that can be used with GoPro mounts.
To ensure strength, this is sliced into multiple parts that need to be printed in specific orientations and then assembled with glue.
The assembling process is very simple, just slot the two "ears" into the base while applying glue to all mating surfaces.
While this works for what I want, avoid or use extreme caution when using this for demanding activities where the gluing may come apart and result in damaged equipments.
The author hasn't provided the model origin yet.