Most basin sinks are made of resin and porcelain. Whether your basin sink is made of one or the other, using epoxy as the repairing compound will allow you to give the sink a quick and easy fix. If you are prepared to do the job yourself within a short period of time, gather your supplies and get to work.
Use the sandpaper to smooth the chipped or broken areas in the basin. Soak a clean cloth in rubbing alcohol and then swipe it over the damaged surfaces to remove any dirt and build-up. Let it dry for several minutes so there is no moisture to alter the effects of the repair.
Prepare the compound that will fill the chips and cracks. Place a small amount of epoxy or porcelain-repair compound on the tile and then place a small amount of high-gloss, alkyd-based paint on top of it. Stir it carefully with the tongue depressor or dowel and add a very small drop of appliance paint to alter the colour until it is well-combined.
Place the corner of the razor blade in the compound and carefully apply it to the damaged areas. Use the paintbrush to help smooth the paint into any fine lines and cracks. Reapply layers of compound over each other if you are filling in a chipped area. This is how you will bring the repair up to the surface level by filling it in completely.
Allow the compound to dry for a few minutes.
Dip another cotton swab in the nail polish remover and carefully wipe away any excess epoxy from the area surrounding the repair. Allow the entire repair to dry for 24 hours before using the sink.