Originally Posted by
FINASTORY
When you want to checkin a Cardboard box, they will make you sign a waiver releasing the airline from any liability from damages to the box. The boxes come in ok, but as someone previously said, the abuse is the same.
Never been asked to sign a waiver while checking in cardboard boxes and computer/monitor shipping boxes many times.
Just use lots of duct/shipping tape along all edges of the boxes for reinforcement. They will probably be opened and you'll find a little TSA love note inside, but they are pretty conscientious about closing them back up well.