In this video presented by Karran, a sink provider specializing in “seamless” sinks for laminate, solid surface, quartz and granite, repair techniques are shown for solid surface acrylic sinks. While we would never recommend that homeowners or non-professionals do any work on their own sinks or countertops, this video depicts how easily a small problem could be repaired in solid surface.
You may also be interested in this video on granite countertop repair.