About this 3D model

Hi I lost my lead's storage bought with my mechanical pencil so I decide to design and print a similar one. Thanks to this model I wouldn't have to buy another one. When I searched for a model on the internet, I couldn't find anything so I posted this. I hope that it could help someone in the same situation as me. ? In order for the cap to stick to the storage unit and to close without opening all the time, I put Blu-Tack in the cap so that it stays in place but the storage is still openable