While it's generally not recommended to remove your cartilage piercing for any length of time, taking it out for an hour should be okay in most cases. However, it is important to keep in mind that your piercing may close up if it is left out for too long. If you do need to remove your cartilage piercing, it is best to do so for as short a time as possible and then put it back in as soon as possible. If you're unsure, you can always consult with your piercer to get their opinion on the matter. Just remember to be careful and gentle when removing and replacing your piercing.