drilling hole in sink

[khairoon]

I have a porcelain cast iron undercounter sink and I want to drill another hole for an R.O. faucet. What type of drill bit should I use to cut a 1 hole in the sink?

[KenParticipant]

To do it correctly, you need a carbide hole saw to cut though the porcelain and a regular hole saw to cutthe cast iron. You also have to do it slowly otherwise the porcelain will shatter.: I have a porcelain cast iron undercounter sink and I want to drill another hole for an R.O. faucet. What type of drill bit should I use to cut a 1 hole in the sink?

[KenParticipant]

: I have a porcelain cast iron undercounter sink and I want to drill another hole for an R.O. faucet. What type of drill bit should I use to cut a 1 hole in the sink?To be honest, get somebody in, its easy to stuff it up bad. PAy somebody to do it and save the heart ache

[Author]

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