JohnnyD
Member
Mayenne (53) When Covid allows..........Which isn't very often these days........
Posts: 1,973
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Post by JohnnyD on Mar 27, 2023 20:28:23 GMT 1
Outer walls are stone/granite.....How do I drill into them to recess mains sockets, something like this?
JD
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mysty
Member
Posts: 1,216
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Post by mysty on Mar 27, 2023 22:17:08 GMT 1
If it's proper solid granite and not the corner stones you would be quicker taking some stone out of the wall to fit the sockets then refit them. If it's the corner stone dry line it. 😃 The people who bought the old hotel we sold in Salers spent two day's going through the granite for a 100mil toilet pipe. If its soft granite you could always try an electric chipper to open a hole.
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Post by pcpa on Mar 27, 2023 22:20:52 GMT 1
That wont even look at it.
You might get one or two holes done with a carbide tipped one, I went through 30cm of bêton with a new 50mm one for a shower waste and it ripped out two teeth leaving it unuseable.
What you need is a carotteuse and diamond cores, I have a full set but it takes a very long time especially in hard stone like granite but its pretty much the only way, I cant recall why I was using the carbide tipped scie cloche.
Yes I can, I had gone through the 30cm brique creuse with the diamond core and then through 20cm of reinforced concrete of the side wall of the fosse, I think something was misaligned and I had to open out the hole to 50mm.
You can use a good powerfull SDS drill but they dont really have the power and the clutches will soon give up when the cores snag, you really need a proper carotteuse preferably one with water cooling. And a lot of patience.
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Post by pcpa on Mar 27, 2023 22:24:59 GMT 1
I thought you were going to use UK 3 pin metalclad sockets for an industrial look?
In this instance given that your walls are granite I won't comment on the UK sockets cliché and would say its a good idea, why? - Because they are square and rectangular and you could open out the recesses using a diamond disc in a 115mm angle grinder and then chip the centres out.
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mysty
Member
Posts: 1,216
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Post by mysty on Mar 27, 2023 22:25:08 GMT 1
Or dry line it ☺
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Post by pcpa on Mar 27, 2023 22:30:04 GMT 1
What is even worse is that the tool you have linked to is a toy one with a diecast rear made to clip in various diameters of rolled flat steel "C" type saws that wont hold a concentric circle and will wobble all over the place plus a silly little screw to retain the pilot drill which would not put a hole in granite anyway.
Not worth 47cts let alone €47
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Post by pcpa on Mar 27, 2023 22:34:47 GMT 1
Is there such a thing as soft granite?
I had some sandstone blocks quarried cut and dressed for some historic gate pillars, customer was a French CEO of Glaxo Smith Kline Beecham who had bought his chateau in Ashdown Forest doing the opposite of what Brits do!
I was amazed to learn that sandstone at least is very soft when freshly quarried and can be worked by hand very easily and it hardens with age & exposure, perhaps granite is the same?
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Post by glazedallover on Mar 27, 2023 22:42:16 GMT 1
Frack it. Its all the rage these days.
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Le-Dolly
Member
La Souterraine (23) depuis '05.
Posts: 558
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Post by Le-Dolly on Mar 27, 2023 23:11:00 GMT 1
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Post by pcpa on Mar 28, 2023 0:06:56 GMT 1
A yes, I had forgotten that the encastré batiboxes are usually square, I have only ever used one and that was a bodge in my first week 18 years ago, it is surface mounted on the wall of my workshop for the light switch, I still havn't replaced it.
I was probably looking at those toy scie cloches in Bricomarché as well that week, everything was so new and different I really had no clue what was what.
Not much has changed!
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Post by pcpa on Mar 28, 2023 0:09:18 GMT 1
As said, that will do you no good at all, it is for concrete. I think concrete would laugh at that one though It would probably just manage in Siporex aérated concrete or carreaux de plâtre if it didn't self destruct first.
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Post by Polarengineer on Mar 28, 2023 6:57:37 GMT 1
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Post by annabellespapa on Mar 28, 2023 8:06:48 GMT 1
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Post by cernunnos on Mar 28, 2023 8:16:41 GMT 1
Outer walls are stone/granite.....How do I drill into them to recess mains sockets, something like this?
JD
Panel the bottom part of your walls ( I assume you are talking about pointed inside walls) and put your electrics in the panels , or run skirting boards with electrics .
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Post by pcpa on Mar 28, 2023 11:10:49 GMT 1
Remove the centre drill part, without the centre drill it is awkward to start but not impossible, but the centre drill always seemed to hold the rest off the wall. Same problem with core drills plus as the pilot drill is on a morse taper it often falls out within the cavity or will be lost outside when drilling from inside out. I make up a gabarit to stbilise the core until it has made its own pocket, it's essential that it does not run out initially, the cheap bayonet fitting toy ones like in the link are anything but concentric to start with so go all over the place. I put the core into my pillar drill and cut through a scrap piece of foam filled UPVC cladding or plywood (that will smoke though) and use that to guide the core initially, for cutting through floors I simply stand on it in the correct position, for walls I either screw or clamp it in place with chevillette de mâcons.
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