Fortunately most hardware stores carry sink repair kits that let you fix the damage rather than replace the entire sink.
Sink basin repair.
Keeney 1 1 4 in brass sink trap j bend.
The repair process is quite easy but it is delicate work that requires a bit of patience and a steady hand.
A thorough cleaning with a strong cleaner and if necessary sanding with fine sandpaper can help restore an old solid surface sink to its former glory.
It is easy to apply on sinks tubs and tiles surfaces and can be used on porcelain ceramic and enamel.
It also requires at least 24 hours for the repair to set so plan your project accordingly.
The weakness of solid surface is that it loses luster over time and can look dull and dingy due to grime and scratches.
It is self leveling and produces a high gloss porcelain like finish.
Cracked resin solid surface sinks should be repaired right away to prevent leaks.
Sink parts repair.
You may be able to use a two part epoxy to fix some cracks.
For pricing and availability.
The magic porcelain chip fix repair is a two part epoxy paint to repair tubs and sinks.
Keeney 1 1 2 in dia pvc p trap fitting.
Cracks can also spread out and further damage the sink.
For pricing and availability.