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Drilling Granite Counter Tops?

 
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Old 04-29-2014, 10:26 PM   #21
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Re: Drilling Granite Counter Tops?


Undermount sinks going in at the same time?
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Old 04-29-2014, 10:29 PM   #22
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Re: Drilling Granite Counter Tops?


Check these guys out...

I couldn't imagine doing that many holes w/o a drill press.

http://www.powrgrip.com/cgi-bin/powr...ral_other.html
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Old 04-29-2014, 10:38 PM   #23
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Re: Drilling Granite Counter Tops?


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Originally Posted by CarpenterSFO View Post
Undermount sinks going in at the same time?
I have no info on the sink, that's not us.
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Old 04-29-2014, 10:41 PM   #24
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Re: Drilling Granite Counter Tops?


Quote:
Originally Posted by griz View Post
Check these guys out...

I couldn't imagine doing that many holes w/o a drill press.

http://www.powrgrip.com/cgi-bin/powr...ral_other.html
That looks nice Griz but it looks like this yellow tan granite is the soft stuff and the goes through fast. Also not much room in back of the sink hole for the vac. cup.
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Old 04-29-2014, 11:06 PM   #25
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Re: Drilling Granite Counter Tops?


Those bits you posted Dirty will work perfect. A variable speed grinder will be best. Check the rpm max on those bits. Also they sell a rubber o ring that creates a damn around the bit. It seals to the top and then you can put water inside the ring to keep the bit cool. Something like this.

http://www.toolocity.com/water-conta...ll-bits-3.aspx
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Old 04-29-2014, 11:07 PM   #26
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Re: Drilling Granite Counter Tops?


Sounds like you may already be aware, but the darker the granite the harder it usually is. This would have an affect on how long your bit lasts. Keep us posted, if you will, about what works best!
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Old 04-29-2014, 11:12 PM   #27
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Re: Drilling Granite Counter Tops?


Quote:
Originally Posted by overanalyze View Post
Those bits you posted Dirty will work perfect. A variable speed grinder will be best. Check the rpm max on those bits. Also they sell a rubber o ring that creates a damn around the bit. It seals to the top and then you can put water inside the ring to keep the bit cool. Something like this.

http://www.toolocity.com/water-conta...ll-bits-3.aspx
thanks OverA that looks good, better than the puddy.

Quote:
Originally Posted by Jeff G View Post
Sounds like you may already be aware, but the darker the granite the harder it usually is. This would have an affect on how long your bit lasts. Keep us posted, if you will, about what works best!
Yes I learned today that the darker the stone the harder. I one fab guy I talked to today called himself Rock He said the yellow and tan was soft. He was super nice and I'll need to stop by his shop with some beer for the help.
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Old 04-29-2014, 11:53 PM   #28
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Re: Drilling Granite Counter Tops?


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Originally Posted by Dirtywhiteboy View Post
I have no info on the sink, that's not us.
They must not be undermount, else you'd be involved, if you're installing the counters. What type of high-rise? Hotel? Condos?
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Old 04-30-2014, 12:19 AM   #29
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Re: Drilling Granite Counter Tops?


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Originally Posted by CarpenterSFO View Post
They must not be undermount, else you'd be involved, if you're installing the counters. What type of high-rise? Hotel? Condos?
It's low income housing. They don't even get a dish washer
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Old 04-30-2014, 12:24 AM   #30
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Re: Drilling Granite Counter Tops?


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Originally Posted by Dirtywhiteboy View Post

It's low income housing. They don't even get a dish washer
No undermount sinks then. It's funny how granite countertops have become a budget choice. Given that hawaii is closer to China it could be less expensive than here...
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Old 04-30-2014, 12:25 AM   #31
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Re: Drilling Granite Counter Tops?


Quote:
Originally Posted by Dirtywhiteboy
It's low income housing. They don't even get a dish washer
But they get granite! That means they can be on House Hunters.
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Old 04-30-2014, 05:52 AM   #32
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Re: Drilling Granite Counter Tops?


My guys do it wet or dry, after install or before. Bits last longer dry.
They either pack the inside of the bit with ice or use duct tape to make a dam and put water in the dam, small bucket goes in the cabinet to catch water. 2 minutes or less to drill

That rubber ring may not work with the lighter color granite due to the small fissures not sealing the suction.
Also since it is probably cheap granite more fissures are likely as well as softer granite.
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Old 04-30-2014, 06:47 AM   #33
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Re: Drilling Granite Counter Tops?


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Originally Posted by kiteman View Post
But they get granite! That means they can be on House Hunters.
Thick granite to boot.
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Old 04-30-2014, 09:32 AM   #34
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Re: Drilling Granite Counter Tops?


Quote:
Originally Posted by Dirtywhiteboy View Post

Yes I learned today that the darker the stone the harder. I one fab guy I talked to today called himself Rock He said the yellow and tan was soft
Not really. The minerals making up granite and the like all have Moh hardnesses of five to seven, with the dark hornblende being on the low end, and the light quartz and dark olivine being on the upper end.

Building materials referred to as marble are quite soft in comparison to the basalt, "granite" and crystalline rocks typical of modern counter tops and flooring.

I have a degree, and attended grad school in geology.
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Old 04-30-2014, 10:48 AM   #35
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Re: Drilling Granite Counter Tops?


Use plumbers putty , make a rope and use it to form a sealed circle around the hole your cutting , fill with water ....etc..etc..etc...



JMPOV,
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Old 04-30-2014, 08:08 PM   #36
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Re: Drilling Granite Counter Tops?


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Originally Posted by PrestigeR&D View Post
Use plumbers putty , make a rope and use it to form a sealed circle around the hole your cutting , fill with water ....etc..etc..etc...



JMPOV,
Regular plumbers putty will stain the granite, especially lighter colors.
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Old 05-01-2014, 01:11 AM   #37
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Re: Drilling Granite Counter Tops?


Quote:
Originally Posted by CarpenterSFO View Post
No undermount sinks then. It's funny how granite countertops have become a budget choice. Given that hawaii is closer to China it could be less expensive than here...
No boat from China stops here. It must go to Long beach and get loaded on to a US registered ship then to Hawaii. It's called the Jones act.
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Old 05-01-2014, 01:14 AM   #38
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Re: Drilling Granite Counter Tops?


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Thick granite to boot.
It gets no sub plywood counter and doesn't need glue up bull nose to cover the ply edge. They just turn the edge and polish and it's good to go.
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Old 05-01-2014, 01:18 AM   #39
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Re: Drilling Granite Counter Tops?


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Originally Posted by Dirtywhiteboy View Post
It's low income housing. They don't even get a dish washer
do they have an open spot for the DW at least?
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Old 05-01-2014, 02:00 AM   #40
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Re: Drilling Granite Counter Tops?


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do they have an open spot for the DW at least?
This has not started yet but I don't see why they would. It's a high rise building.

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