enlarge hole for faucet


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Old 03-05-21, 08:38 PM
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enlarge hole for faucet

I'm wanting to replace my under-sink water filter system with a dedicated faucet with a different one. The new faucet will require a hole in the stainless steel sink 1" whereas the existing hole for the old dedicated faucet is only 9/16". What's going to be the best way to go about enlarging that hole to the new size needed? Thanks.
 

Last edited by sgull; 03-05-21 at 11:37 PM.

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03-06-21, 03:39 AM
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I have found that a step bit works quite well for enlarging a hole.
Good quality ones are fairly expensive but a handy addition to your tool arsenal
On SS don't go too fast to reduce overheating........a tiny drop of oil would reduce temps while drilling.

 
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Old 03-06-21, 03:39 AM
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I have found that a step bit works quite well for enlarging a hole.
Good quality ones are fairly expensive but a handy addition to your tool arsenal
On SS don't go too fast to reduce overheating........a tiny drop of oil would reduce temps while drilling.

 
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Old 03-06-21, 07:06 AM
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Here's something I learned from a guy who installed aluminum storefronts.

To lubricate drills and taps, he used what is now called LPS Edge Lubricant. It's like paraffin in a tube, but keeeps bits and taps from loading up with aluminum. It also works well on both mild and stainless steel. I also used it on band saw blades.

On stainless you still want to keep the speed down, but don't be afraid to use pressure, as long as you keep it well lubricated.
 
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Old 03-06-21, 07:44 AM
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Harbor Freight carries some tin costed step bits that are more reasonably priced, however, they do not work as well as the more expensive ones.

Best review out there: https://www.youtube.com/watch?v=nGbMQul6_Bc
 
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Old 03-06-21, 07:54 AM
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I have found that a step bit works quite well for enlarging a hole.
Of, course! A step bit should be the way to go for this. I even have one but simply did not even think of it. I'm as good as done now! Thanks...!

Edit: Dang, I just recalled my step bit maximum bore is to 3/4" inch hole so will have to acquire one that bores to 1".
 
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Old 03-06-21, 08:30 AM
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See post #4. or any big box store.
 
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Old 03-06-21, 08:37 AM
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See post #4. or any big box store.
Yes. and I have a buddy who might loan me one for the job.
 
 

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