These models have been designed to neatly mate with the Nintendo Switch Joy-Cons to allow mobile gaming using a variety of phones equipped with a phone case. The contours of the grips match the Joy-Con contours, and the entire package can be packed away into a compact travel case.

Recommendations:

• 0.20 layer thickness
• PLA
• No supports (bridging must be enabled)
• No skirts
• Ensure the region inside the rails is being bridged perpendicular to the length for best bridges
• Use a strong glue that works well with PLA to attach the small pieces to the valleys in the adapters

The adapters were originally designed for an iPhone 13 Pro, but with some modifications I believe the current design should be broadly applicable to most phones with cases. I can attest that the design is secure on an iPhone 13 Pro and an iPhone 11, both equipped with a MagBak case.