They make excellent sinks Angie, you mustn't throw them out! There are two ways to proceed:
If hubby wants a nice quiet garden shed job, he could chip off the white ceramic for you, it leaves a wonderful sink. Nice winter job really.... (just trying to help
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Course, you could just cover them in hypertufa but this must be done where they are to stay as it chips off moving it and of course the weight with the tufa added is formidable....