Cutting through cast iron sink

[MasterPlumbersKeymaster]

I have a cast iron sink & I want to install new faucets. I’m assuming that modern faucets are bigger around than the existing faucets.

Two questions:
1. What kind of hole-saw should I use to make the holes bigger? (e.g. diamond, carbide, …)
2. What size/diameter hole-saw will I need?

[daveroconnParticipant]

All hole sizes in sinks are 1 1/4 diameter. You shouldn’t need to cut a larger hole in your cast iron sink for all of the faucet manufacturers use the 1 1/4 dia. as the standard. If you need to cut an extra hole in your sink please see the folowing site.

Respectfully David F. WallingRelton sink hole cutter

[Author]

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