How To Drill A Stone Sink? - Plumbing - DIY Home Improvement | DIYChatroom

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Old 01-06-2011, 04:02 AM   #1
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How to drill a stone sink?

I'm thinking about fitting a waste disposal unit underneath our stone kitchen sink, but first I will have to widen the waste trap hole. However, I have not done this before and I'm not sure how to go about it. I know I need one of these sorts of drill bits, not sure of the name, .
Could someone give me a few tips on how to do this, and if its necessary to bevel the hole like it is in the attached picture, and if it is, how to do that too?
Thanks for reading
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Old 01-06-2011, 06:29 AM   #2
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Doubtful you have the tools for such a job, and they are expensive diamond bits. I would suggest you find a granite guy or similar to do the job.

Personally, I never recommend garbage disposals, but will install them if the customer demands. They introduce things into the DWV system that don't belong there and can cause clogs.


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Old 01-09-2011, 03:00 AM   #3
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Thanks for the reply Juster
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Old 01-09-2011, 10:29 AM   #4
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I would avoid modifying a stone sink. One false move and you might end up with an unwanted chip or crack.
The good conscientious technician or serviceperson will carry extra oils and lubricants in case the new pump did not come with oil or the oil was accidentally spilled, so the service call can be completed without an extra visit.
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Old 01-09-2011, 08:11 PM   #5
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I would have a professional tackle this job as he is insured and has all the tools to do the job which you have neither.
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