Foldable Playpen accessories

I wanted my playpen to be more adaptable, so I modified the connection accessories.
While most of them remain identical to the original parts, I made a change to the Cover cap by eliminating the ribs. This adjustment allows it to be positioned without being fixed in a specific orientation.

Explanation for the modified parts:

Cover_original.stl: original cover cap
Cover_half.stl: ribs on only one side
Cover_flat.stl: ribs removed from both sides
Fish_lock.stl: the locking mechanism, which has the potential to break off.

I made modifications to enable it to be printed without the need for support, but this alteration does not impact its functionality - it still slides smoothly during use. I recommend using ABS for the print to ensure durability, as using PLA may result in breakage between layers.