Homeowners looking to add a touch of elegance to their kitchen may find that a ceramic sink proves effective in creating a contemporary space.An Astracast ceramic sink manufactured from premium fireclay ceramic and hand finished could provide the sleek contours but spacious main bowls required to give a kitchen a modern twist.But despite the elegance of a ceramic sink, they may be prone to developing a small hairline crack.DIY expert Julian Cassell, author of DIY Know-How With Show-How, advised one Guardian reader with a ceramic sink to invest in a kitchen surface repair kit to fill in the cracks.Follow any specific instructions carefully, ensuring that the basin cracks are bone dry before you begin and allow adequate time before using the sink again after the repair, he said.Mr Cassell also advised the Guardian reader to avoid pouring very hot water in to the repaired section of the ceramic sink in the future to prevent any more hairline cracks from appearing.