"Matt Mika" rotaour@dimcomDEEOOHTEEnet wrote in message
...
I have a porcelin/metal sink that I'd like to put an extra hole in for
a R/O water dispenser. Can these things be drilled? Or do I need to
get a new sink?

Thanks,
Matt Mika

They can be drilled but it takes some work. Mark the final hole size in
marker then drill a small pilot hole with a carbide drill through the enamel
and the cast iron. Then use a small pointed punch and working from the hole
you just drilled chip out the enamel to the hole size just chipping the
enamel away then when its just cast iron showing to the desired size either
use a hole saw to get a nice round hole or drill a series of small holes and
chip out and file the cast iron until the fitting fits through the hole. The
escutionSP around the fitting should cover the flaws of an imperfect hole.

Rich