Cat Key Holder with Reinforced Tail

V2: The lever structure has been reinforced, and it is now easier to remove supports without breaking, you only need to print one.

V1: The original lever structure has been repaired. The previous one often failed to print, so it was made in two parts for easier printing.

The protrusions on both sides of the tail were difficult to connect securely with the lever, and the tail would be pulled off when hanging slightly heavier keys. Therefore, a hole was added to the tail. 1.75mm filament can pass through it without easily shifting, ensuring the tail and lever are securely fixed.