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#1
Posted to rec.woodworking
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Drilling Granite counter top
I am planning to install a dispenser for Brandy in our kitchen.
The spigot will be a very typical sink-type spigot from HD or Lowe's that mounts through the counter top with a 1/2" hole. I have the normal graduated carbide bit selection as well as a DeWalt Hammer Drill. However, I've never drilled granite before and would appreciate any tips. For instance, when the installers did the sink fixtures, they used an abrasive diamond hole saw and a sloppy sponge for cooling. Should I use water to cool the carbide bit? Should I invest in the abrasive hole saw? Do I risk cracking the counter top if I use the hammer drill function, or should I go with the drill function and lots of pressure and patience? Is it necessary to drill a small pilot if using the carbide bit, or can I "go for the gold" in one shot? -- Nonny What does it mean when drool runs out of both sides of a drunken Congressman's mouth? The floor is level. |
#2
Posted to rec.woodworking
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Drilling Granite counter top
On Thu, 19 Nov 2009 21:58:58 -0800, "Nonny" wrote:
the abrasive hole saw? Do I risk cracking the counter top if I use the hammer drill function, or should I go with the drill Yes, there's a good chance you'll crack the granite function and lots of pressure and patience? Is it necessary to drill a small pilot if using the carbide bit, or can I "go for the gold" in one shot? Use a diamond abrasive bit and take your time with it. |
#3
Posted to rec.woodworking
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Drilling Granite counter top
On Nov 20, 12:58*am, "Nonny" wrote:
I am planning to install a dispenser for Brandy in our kitchen. The spigot will be a very typical sink-type spigot from HD or Lowe's that mounts through the counter top with a 1/2" hole. *I have the normal graduated carbide bit selection as well as a DeWalt Hammer Drill. *However, I've never drilled granite before and would appreciate any tips. For instance, when the installers did the sink fixtures, they used an abrasive diamond hole saw and a sloppy sponge for cooling. Should I use water to cool the carbide bit? *Should I invest in the abrasive hole saw? *Do I risk cracking the counter top if I use the hammer drill function, or should I go with the drill function and lots of pressure and patience? *Is it necessary to drill a small pilot if using the carbide bit, or can I "go for the gold" in one shot? -- Nonny What does it mean when drool runs out of both sides of a drunken Congressman's mouth? The floor is level. Diamond core-bore in a grinder. Use one designed to run dry. Use a guide as there is no pilot drill. NEVER use carbide or hammer function. |
#4
Posted to rec.woodworking
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Drilling Granite counter top
Nonny wrote:
I am planning to install a dispenser for Brandy in our kitchen. The spigot will be a very typical sink-type spigot from HD or Lowe's that mounts through the counter top with a 1/2" hole. I have the normal graduated carbide bit selection as well as a DeWalt Hammer Drill. However, I've never drilled granite before and would appreciate any tips. For instance, when the installers did the sink fixtures, they used an abrasive diamond hole saw and a sloppy sponge for cooling. Should I use water to cool the carbide bit? Should I invest in the abrasive hole saw? Do I risk cracking the counter top if I use the hammer drill function, or should I go with the drill function and lots of pressure and patience? Is it necessary to drill a small pilot if using the carbide bit, or can I "go for the gold" in one shot? The guide could be something as simple as the same size hole drilled through a 2x4 and then slip the hole saw in that and start your cut, once your into the granite you can nix the guide. Never use the hammer function on granite or tile... -- "You can lead them to LINUX but you can't make them THINK" Running Mandriva release 2008.0 free-i586 using KDE on i586 Website Address http://rentmyhusband.biz/ |
#5
Posted to rec.woodworking
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Drilling Granite counter top
Drill only don't hammer-drill.
Use pool or flowing water coolant. You can take plumbers putty and create a dam around the area - allowing plenty of water to keep it cool. Rock is always cut with water - it will fracture and you will not like the zip run across the sink top! If you can get a small water pump - think water feature for house - palm size - and use it to pump into the pool and have an overflow that goes into the sink or pot. You want to keep as much dust out of the hole so the dust won't grind away the drill and waller out the hole. Martin Nonny wrote: I am planning to install a dispenser for Brandy in our kitchen. The spigot will be a very typical sink-type spigot from HD or Lowe's that mounts through the counter top with a 1/2" hole. I have the normal graduated carbide bit selection as well as a DeWalt Hammer Drill. However, I've never drilled granite before and would appreciate any tips. For instance, when the installers did the sink fixtures, they used an abrasive diamond hole saw and a sloppy sponge for cooling. Should I use water to cool the carbide bit? Should I invest in the abrasive hole saw? Do I risk cracking the counter top if I use the hammer drill function, or should I go with the drill function and lots of pressure and patience? Is it necessary to drill a small pilot if using the carbide bit, or can I "go for the gold" in one shot? |
#6
Posted to rec.woodworking
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Drilling Granite counter top
I've done it with one of these:
http://www.harborfreight.com/cpi/cta...emnumber=32400 Use some water for cooling. -Bruce On Thu, 19 Nov 2009 22:58:58 -0700, Nonny wrote (in article ): I am planning to install a dispenser for Brandy in our kitchen. The spigot will be a very typical sink-type spigot from HD or Lowe's that mounts through the counter top with a 1/2" hole. I have the normal graduated carbide bit selection as well as a DeWalt Hammer Drill. However, I've never drilled granite before and would appreciate any tips. For instance, when the installers did the sink fixtures, they used an abrasive diamond hole saw and a sloppy sponge for cooling. Should I use water to cool the carbide bit? Should I invest in the abrasive hole saw? Do I risk cracking the counter top if I use the hammer drill function, or should I go with the drill function and lots of pressure and patience? Is it necessary to drill a small pilot if using the carbide bit, or can I "go for the gold" in one shot? |
#7
Posted to rec.woodworking
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Drilling Granite counter top
Nonny wrote:
I am planning to install a dispenser for Brandy in our kitchen. The spigot will be a very typical sink-type spigot from HD or Lowe's that mounts through the counter top with a 1/2" hole. I have the normal graduated carbide bit selection as well as a DeWalt Hammer Drill. However, I've never drilled granite before and would appreciate any tips. For instance, when the installers did the sink fixtures, they used an abrasive diamond hole saw and a sloppy sponge for cooling. Should I use water to cool the carbide bit? Should I invest in the abrasive hole saw? Do I risk cracking the counter top if I use the hammer drill function, or should I go with the drill function and lots of pressure and patience? Is it necessary to drill a small pilot if using the carbide bit, or can I "go for the gold" in one shot? You need liberal amounts of water and a diamond abrasive drill When we do this we create a putty dam about 3 inches high and a foot diameter and fill it full of water . The granite will crack if you dont |
#8
Posted to rec.woodworking
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Drilling Granite counter top
Thanks to everyone for the information. My pump arrived this AM,
so I'll make a run to our Harbor Freight store and see what they have in diamond abrasive bits, as recommended in the URL. I'm now considering an optional wall-type dispenser that won't require drilling the granite counter top. I'm particularly concerned about the location of where I'd mount the spigot, since it's near a corner and having tile and marble experience, I KNOW that's an area frought with danger, anyway. My alternative would be a "box" that would wall mount and the spigot would be on the top, giving me more height as well. Again, thanks for reaffirming just how many good people hang out here and what a broad range of knowledge and advice is present. -- Nonny What does it mean when drool runs out of both sides of a drunken Congressman's mouth? The floor is level. |
#9
Posted to rec.woodworking
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Drilling Granite counter top
Nonny wrote:
Thanks to everyone for the information. My pump arrived this AM, so I'll make a run to our Harbor Freight store and see what they have in diamond abrasive bits, as recommended in the URL. I'm now considering an optional wall-type dispenser that won't require drilling the granite counter top. I'm particularly concerned about the location of where I'd mount the spigot, since it's near a corner and having tile and marble experience, I KNOW that's an area frought with danger, anyway. My alternative would be a "box" that would wall mount and the spigot would be on the top, giving me more height as well. Again, thanks for reaffirming just how many good people hang out here and what a broad range of knowledge and advice is present. I did a kitchen last year where I ended up having to drill holes in the granite counter top to permanently secure (epoxy did not work)the "wooden rack/shelf" to the kitchen desk you see in the left foreground in this pictu http://www.e-woodshop.net/images/3811kit-11.jpg The diamond bits were expensive but it was not a tough job, although it was a bit too close to the edge for comfort. We used water, but no more than a couple of cups, a bit at a time, while drilling the four 1/2" holes, and the one 1" hole (to allow the client EZ access to the receptacle under the counter for her laptop). I did, however, breathe a sigh of relief after it was done ... -- www.e-woodshop.net Last update: 10/22/08 KarlC@ (the obvious) |
#10
Posted to rec.woodworking
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Drilling Granite counter top
On Nov 19, 11:58*pm, "Nonny" wrote:
I am planning to install a dispenser for Brandy in our kitchen. The spigot will be a very typical sink-type spigot from HD or Lowe's that mounts through the counter top with a 1/2" hole. *I have the normal graduated carbide bit selection as well as a DeWalt Hammer Drill. *However, I've never drilled granite before and would appreciate any tips. For instance, when the installers did the sink fixtures, they used an abrasive diamond hole saw and a sloppy sponge for cooling. Should I use water to cool the carbide bit? *Should I invest in the abrasive hole saw? *Do I risk cracking the counter top if I use the hammer drill function, or should I go with the drill function and lots of pressure and patience? *Is it necessary to drill a small pilot if using the carbide bit, or can I "go for the gold" in one shot? -- Nonny What does it mean when drool runs out of both sides of a drunken Congressman's mouth? The floor is level. Remember that making this hole will weaken the countertop.. So do you really need to make it? TMT |
#11
Posted to rec.woodworking
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Drilling Granite counter top
"Too_Many_Tools" wrote in message news:b318fb65-dd85-4813-889d- Remember that making this hole will weaken the countertop.. So do you really need to make it? Nope- I didn't. I finished today and it works just swell without drilling the cabinet top. The dispenser is mounted on a cast electrical box that is screwed to the wall, sitting on the 4" backsplash, and the pipe goes out the backside, into the wall and down to the pump. This places the spigot up about 14" above the counter top, permitting any glass or even a bottle to fit beneath it: handy if I want to empty the system. Essentially, I have a 3-gallon water bottle I purchased from a water store, sitting on the floor of the pantry. A 3/8" tube runs from it up to a Flojet diaphragm pump. This prevents any siphoning. The pump has a 35 psi pressure switch and a 1.1 gpm rate, and can supposedly run dry. It's fed with a 5a, 12vdc "brick" from an old laptop and fused at 4a., which is the manufacturer's suggestion. The pump, power supply and fuse holder all are mounted on a piece of 3/4" particle board and fastened with a single screw to the back of an adjoining cabinet. The pump's output goes up the interior of a wall to a cast metal electrical box with cover: painted to match the wall. The box sits on the top of the 4" backsplash and is secured to a stud. The pipe enters from the back and is connected to a press to dispense faucet like you see for RO systems or filtered water systems. The faucet is mounted on the top of the box to gain even more height above the cabinet. The system was tested and purged with water, of course and passed with flying colors. The bottle was emptied and refilled with 3 bottles of Brandy as a test and should be in service during Happy Hour tonight. GriN -- Nonny What does it mean when drool runs out of both sides of a drunken Congressman's mouth? The floor is level. |
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