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
escution<SP> around the fitting should cover the flaws of an imperfect hole.
<< Can these things be drilled? >>
For perfectly round hole use a diamond hole saw like the ones at Harbor Freight
($7-9). It will be a little tedious, but less chance of damaging the sink. You
may have to prepare a guide for the saw, as some of them do not have pilot
I did mine by grinding the porcelain off with a Dremel tool, then
drilling the cast iron.
Be sure to grind *ALL* the porcelain off where the hole will go.
I left just a smidgeon and drilling took out a big chip. Luckily
the added faucet (for filtered water) covered it.
- good luck -
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.