Drilling granite

[Deleted member 2053]

It has suddenly become my lot to drill flue and pipe holes in granite stone walls. Like 15" thick granite stone walls. Has anyone found any method/tool that does better than any other? Semtex is NOT an option.

 

[Kip]

Would the diamond tiped bits be no use? The same kind used for tiles..

 

[stevetheplumber]

diamond drilling is the norm for something that hard and thick you may need to get a professional company in with the proper rig

 

[WHPES]

Diamond tipped core drill but it will take you ages and you need to measure the loss on the cutting tips and charge accordingly.

Tile drill not heavy enough.

If you can pump water onto it, it will be quicker and your tip will last longer

 

[oldplumber]

need more than one core for granite, best bet to get in a proffessional with a drill stand to do the job. granite will destroy a normal drilling system used by your average plumber, plus your arms will fall off before you get through the wall. How do I know, me house is built of stone and rubble with a brick facing, the walls are 24" thick and ive worn out numerous core drills and cores when i turned the building into flats, and ive arms like an orangutang now. I got in a man with a water cooled core drill in the end and it worked out cheaper than a drill and 4"core.

 

[Deleted member 2053]

I got in a man with a water cooled core drill in the end and it worked out cheaper than a drill and 4"core.

I rather thought that this would be the answer. I am the other side of the A30 to you but I guess the stone is much the same. I have a couple of jobs on the books that need granite drilling so perhaps I could save money and get them both done the same day.

Thanks for all the suggestions.

 

[unguided1]

Hire a cornishman for the day and pay him with pasties, those guys go through Granite, like a bangcock lady boy going through yer wallet!!!

 

[365drills]

Sorry our core bits are 32mm deep only and for use on granite worktops to a depth of 30mm.

Not much good for you.

http://www.*********.com/project3/10.jpg
Our diamond cores are only 32mm deep. Ideal for granite worktops in kitchens but not 15" walls...

http://www.*********.com/toolfair/3.jpg

But if you are looking for decent cutters.
We have nice bits.
http://www.*********.com/toolfair/2.jpg

Worth a look

 

[WHPES]

those guys go through Granite, like a bangcock lady boy going through yer wallet!!!

Is that speaking from experience?

 

[unguided1]

Hi WHPES
As I have always said you have to try everything at least once, so yes I have used many Cornishmen to go through granite!!!!!