I was cleaning carboys this afternoon in the basement and I dropped one in the sink next to the washer. It's a twin tub job that I assume is fiberglass. Well, the carboy is fine, but I cracked the bottom of the sink.
What can I use to fix this? Are there products made for it, or do I need to get something like an automotive patching kit? The crack is about 4 inches long. Unfortunately at the spot where it happened the underside of the sink is not flat. This would seem to preclude gluing a piece of plywood under the crack.
It doesn't have to be pretty and it really doesn't have to be that strong (fortunately, it's not the side of the sink that the washer drains into). So, it just needs to not leak all over the place ever time a little water goes in it.