PS: If the print is not precise, adding a thin layer of adhesive tape helps hold the connection together.
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If you like the container idea, try this magnetic slide too!
(Magnetically compatible only on X series)
https://makerworld.com/it/models/84867
If you occasionally find poop leaking, try this in combination with the magnetic ramp: https://makerworld.com/en/models/163896#profileId-179900