Correct. Small chunks missing would be Bondo. For when there is a lot missing or if there is too much water damage on the bottom of the cabinet, I would cut the entire bottom of the cabinet and replace with new. Here is a link to some pictures of a Defender cabinet that was in very bad shape that I had to cut the bottom of the cab and rebuild. (yes... safe link) 1drv.ms/f/s!AhzU6GuVSfQJlJ4-_oVO8ke5RYXsXQ?e=Bq3Ew6
