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Drilling a hole in a porcelain sink Butzmark 09-05-2006
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Posted by JimL on September 6, 2006, 12:04 pm

>I just got an reverse osmosis filter. The first step in installation
>is to make a one and a quarter inch hole in the sink top for it's
>faucet. I bought a bimetal hole saw of that size and proceeded to try
>to drill a pilot hole with an 1 inch metal bit...no luck. Tomorrow
>I'll go buy something else for the pilot hole. I'm thinking I may need
>an abrasive bit for the porcelain layer and then switch to the
>bimetal. Anybody know?

A plumber told me that those reverse osmosis filters waste a huge
amount of water.

You might consider running your tubing to a 5 gallon bucket instead
of dumping it down the drain.

a. It lets you see how much water you are wasting.
b. You can use it water your plants.





Posted by sosessyithurts on September 6, 2006, 6:10 pm

Butzmark wrote:
> I just got an reverse osmosis filter. The first step in installation
> is to make a one and a quarter inch hole in the sink top for it's
> faucet. I bought a bimetal hole saw of that size and proceeded to try
> to drill a pilot hole with an 1 inch metal bit...no luck. Tomorrow
> I'll go buy something else for the pilot hole. I'm thinking I may need
> an abrasive bit for the porcelain layer and then switch to the
> bimetal. Anybody know?

what you need is a tile bit
check out any diy home supply

they have bits to cut granite, porcelain, ceramic etc

i have a 5/8th's ceramic bit you can try, you want me to email it to
you?


Posted by Butzmark on September 7, 2006, 7:20 am

>I just got an reverse osmosis filter. The first step in installation
>is to make a one and a quarter inch hole in the sink top for it's
>faucet. I bought a bimetal hole saw of that size and proceeded to try
>to drill a pilot hole with an 1 inch metal bit...no luck. Tomorrow
>I'll go buy something else for the pilot hole. I'm thinking I may need
>an abrasive bit for the porcelain layer and then switch to the
>bimetal. Anybody know?


So I bought a Hitachi carbide grit hole saw at Lowe's for eleven
bucks. It has a pilot bit attached. It went through the sink pretty
easily. The pilot bit was sort of a spade bit arrangement with a piece
of carbide on the end of a shaft. The shaft was a smaller diameter
than the carbide so once the carbide went through the bottom of the
sink material I lost some tightness from the guide bit, which
roughened the cut up a bit. The faucet flange is big enough to cover
the area around the inch and a quarter that was cut up some. If I
needed a real clean Inch and a quarter hole I'd probably use something
else, but this worked well.

Thanks all


Posted by sosessyithurts on September 7, 2006, 5:38 pm

Butzmark wrote:
> So I bought a Hitachi carbide grit hole saw at Lowe's for eleven
> bucks. It has a pilot bit attached. It went through the sink pretty
> easily. The pilot bit was sort of a spade bit arrangement with a piece
> of carbide on the end of a shaft. The shaft was a smaller diameter
> than the carbide so once the carbide went through the bottom of the
> sink material I lost some tightness from the guide bit, which
> roughened the cut up a bit. The faucet flange is big enough to cover
> the area around the inch and a quarter that was cut up some. If I
> needed a real clean Inch and a quarter hole I'd probably use something
> else, but this worked well.

cool deal

yeah I suspect a precision cut would require a at leats a $30 - $50
spade bit
probaly just a solid heavy bit, not a hole saw type
*the spade bit I bought for drilling cermic didn't have grit

I always like it when I have the right tools for a job


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