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Core drilling technique
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Bob Minchin
May 23, 2013, 9:28:03 AM5/23/13
to
I've got to drill a 125mm hole through both leaves of a standard cavity
wall. Looking at TCT core drills they seem to be between 45 and 60 mm
deep. So I'm puzzled at how to get though the first skin. I'll have to
stop after the core depth has been reach and then chisel out the first
core. Clearly once I'm through the first leaf, I can work from both
sides on the second one.
Is there a technique that I'm missing somewhere?
TIA
Bob
wall. Looking at TCT core drills they seem to be between 45 and 60 mm
deep. So I'm puzzled at how to get though the first skin. I'll have to
stop after the core depth has been reach and then chisel out the first
core. Clearly once I'm through the first leaf, I can work from both
sides on the second one.
Is there a technique that I'm missing somewhere?
TIA
Bob
charles
May 23, 2013, 9:34:45 AM5/23/13
to
In article <knl5at$sfc$1...@dont-email.me>,
you can usually tap the core out of the drill centre once it's full.
Otherwise a lever, a screwdrivr for instance, can be inserted through a
hole in the side of the core drill cylinder to help the core out. Then
carry on drilling.
I've never had a problem.
--
From KT24
Using a RISC OS computer running v5.18
Otherwise a lever, a screwdrivr for instance, can be inserted through a
hole in the side of the core drill cylinder to help the core out. Then
carry on drilling.
I've never had a problem.
--
From KT24
Using a RISC OS computer running v5.18
fred
May 23, 2013, 9:41:26 AM5/23/13
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Bob Minchin
May 23, 2013, 9:43:20 AM5/23/13
to
I'd have expected it to stay in one piece.
My inner skin is breeze block so that might crumble fairly easily.
Cheers
Bob
Bob Minchin
May 23, 2013, 9:59:40 AM5/23/13
to
I'm only doing one hole although I could sell it on the 'bay afterwards
I guess.
John Rumm
May 23, 2013, 10:15:30 AM5/23/13
to
On 23/05/2013 14:28, Bob Minchin wrote:
> I've got to drill a 125mm hole through both leaves of a standard cavity
> wall. Looking at TCT core drills they seem to be between 45 and 60 mm
> deep. So I'm puzzled at how to get though the first skin. I'll have to
> stop after the core depth has been reach and then chisel out the first
> core. Clearly once I'm through the first leaf, I can work from both
> sides on the second one.
SDS chisel will normally split out the core quite easily...
> I've got to drill a 125mm hole through both leaves of a standard cavity
> wall. Looking at TCT core drills they seem to be between 45 and 60 mm
> deep. So I'm puzzled at how to get though the first skin. I'll have to
> stop after the core depth has been reach and then chisel out the first
> core. Clearly once I'm through the first leaf, I can work from both
> sides on the second one.
> Is there a technique that I'm missing somewhere?
the hassle ;-)
--
Cheers,
John.
/=================================================================\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\=================================================================/
charles
May 23, 2013, 1:04:57 PM5/23/13
to
In article <knl67j$1qb$1...@dont-email.me>,
> My inner skin is breeze block so that might crumble fairly easily.
> Cheers
> Bob
Bob Minchin <bob.minc...@YOURHATntlworld.com> wrote:
> charles wrote:
> > In article <knl5at$sfc$1...@dont-email.me>,
> > Bob Minchin <bob.minc...@YOURHATntlworld.com> wrote:
> >> I've got to drill a 125mm hole through both leaves of a standard cavity
> >> wall. Looking at TCT core drills they seem to be between 45 and 60 mm
> >> deep. So I'm puzzled at how to get though the first skin. I'll have to
> >> stop after the core depth has been reach and then chisel out the first
> >> core. Clearly once I'm through the first leaf, I can work from both
> >> sides on the second one.
> >
> >> Is there a technique that I'm missing somewhere?
> >
> >
> >
> >
> > you can usually tap the core out of the drill centre once it's full.
> > Otherwise a lever, a screwdrivr for instance, can be inserted through a
> > hole in the side of the core drill cylinder to help the core out. Then
> > carry on drilling.
> >
> > I've never had a problem.
> >
> OK, so are you saying that the core breaks up in the course of drilling?
> I'd have expected it to stay in one piece.
It's always come away for me; both in bricks and heavy concrete blocks
> charles wrote:
> > In article <knl5at$sfc$1...@dont-email.me>,
> > Bob Minchin <bob.minc...@YOURHATntlworld.com> wrote:
> >> I've got to drill a 125mm hole through both leaves of a standard cavity
> >> wall. Looking at TCT core drills they seem to be between 45 and 60 mm
> >> deep. So I'm puzzled at how to get though the first skin. I'll have to
> >> stop after the core depth has been reach and then chisel out the first
> >> core. Clearly once I'm through the first leaf, I can work from both
> >> sides on the second one.
> >
> >> Is there a technique that I'm missing somewhere?
> >
> >
> >
> >
> > you can usually tap the core out of the drill centre once it's full.
> > Otherwise a lever, a screwdrivr for instance, can be inserted through a
> > hole in the side of the core drill cylinder to help the core out. Then
> > carry on drilling.
> >
> > I've never had a problem.
> >
> OK, so are you saying that the core breaks up in the course of drilling?
> I'd have expected it to stay in one piece.
> My inner skin is breeze block so that might crumble fairly easily.
> Cheers
> Bob
harry
May 23, 2013, 1:57:01 PM5/23/13
to
On May 23, 2:28 pm, Bob Minchin
No, that's the way you do it.
A diamond drill is a bit better. You leave the hammer on the
drill off and you get a cleaner breakthrough and less chance of
vibration damage to the wall.
Very important.
Make sure your drill has a functioning clutch.
Drills this size can break your wrist if they jam.
A diamond drill is a bit better. You leave the hammer on the
drill off and you get a cleaner breakthrough and less chance of
vibration damage to the wall.
Very important.
Make sure your drill has a functioning clutch.
Drills this size can break your wrist if they jam.
F Murtz
May 23, 2013, 10:49:18 PM5/23/13
to
charles wrote:
> In article <knl67j$1qb$1...@dont-email.me>,
> Bob Minchin <bob.minc...@YOURHATntlworld.com> wrote:
>> charles wrote:
>>> In article <knl5at$sfc$1...@dont-email.me>,
>>> Bob Minchin <bob.minc...@YOURHATntlworld.com> wrote:
>>>> I've got to drill a 125mm hole through both leaves of a standard cavity
>>>> wall. Looking at TCT core drills they seem to be between 45 and 60 mm
>>>> deep. So I'm puzzled at how to get though the first skin. I'll have to
>>>> stop after the core depth has been reach and then chisel out the first
>>>> core. Clearly once I'm through the first leaf, I can work from both
>>>> sides on the second one.
>>>
>>>> Is there a technique that I'm missing somewhere?
>>>
>>>
>>>
>>>
>>> you can usually tap the core out of the drill centre once it's full.
>>> Otherwise a lever, a screwdrivr for instance, can be inserted through a
>>> hole in the side of the core drill cylinder to help the core out. Then
>>> carry on drilling.
>>>
>>> I've never had a problem.
>>>
>> OK, so are you saying that the core breaks up in the course of drilling?
>> I'd have expected it to stay in one piece.
>
> It's always come away for me; both in bricks and heavy concrete blocks
even if it does not it is fairly easy to break it out of the wall.
> In article <knl67j$1qb$1...@dont-email.me>,
> Bob Minchin <bob.minc...@YOURHATntlworld.com> wrote:
>> charles wrote:
>>> In article <knl5at$sfc$1...@dont-email.me>,
>>> Bob Minchin <bob.minc...@YOURHATntlworld.com> wrote:
>>>> I've got to drill a 125mm hole through both leaves of a standard cavity
>>>> wall. Looking at TCT core drills they seem to be between 45 and 60 mm
>>>> deep. So I'm puzzled at how to get though the first skin. I'll have to
>>>> stop after the core depth has been reach and then chisel out the first
>>>> core. Clearly once I'm through the first leaf, I can work from both
>>>> sides on the second one.
>>>
>>>> Is there a technique that I'm missing somewhere?
>>>
>>>
>>>
>>>
>>> you can usually tap the core out of the drill centre once it's full.
>>> Otherwise a lever, a screwdrivr for instance, can be inserted through a
>>> hole in the side of the core drill cylinder to help the core out. Then
>>> carry on drilling.
>>>
>>> I've never had a problem.
>>>
>> OK, so are you saying that the core breaks up in the course of drilling?
>> I'd have expected it to stay in one piece.
>
> It's always come away for me; both in bricks and heavy concrete blocks
Grimly Curmudgeon
May 24, 2013, 6:49:14 PM5/24/13
to
On Thu, 23 May 2013 14:43:20 +0100, Bob Minchin
<bob.minc...@YOURHATntlworld.com> wrote:
>OK, so are you saying that the core breaks up in the course of drilling?
Usually does.
<bob.minc...@YOURHATntlworld.com> wrote:
>OK, so are you saying that the core breaks up in the course of drilling?
>I'd have expected it to stay in one piece.
Steve Firth
May 25, 2013, 10:19:58 AM5/25/13
to
some rod and bar of appropriate dimensions so that you can tap the core out
using the screw hole and slots for purchase. A big problem if drilling in
rubble walls since bits of stone will wedge against the pilot drill and the
wall of the core drill and will demand many fuckits before they will move.
--
<•DarWin><|
_/ _/
Grimly Curmudgeon
May 25, 2013, 6:41:09 PM5/25/13
to
On Sat, 25 May 2013 14:19:58 +0000 (UTC), Steve Firth
<%steve%@malloc.co.uk> wrote:
>A big problem if drilling in
>rubble walls since bits of stone will wedge against the pilot drill and the
>wall of the core drill and will demand many fuckits before they will move.
Don't get me started on fecking rubble walls.
<%steve%@malloc.co.uk> wrote:
>A big problem if drilling in
>rubble walls since bits of stone will wedge against the pilot drill and the
>wall of the core drill and will demand many fuckits before they will move.
Too many of them around, for my liking.
I was really referring to the relative ease of use of the core drill
on something decent and modern.
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