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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Drilling concrete
Any advice for what sort of drills to use for drilling old very tough
concrete. No holes will be less that 6 mm diameter. I bought some from B&Q that were supposed to be for concrete but they were a miserable failurs so were probably cheap and nasty ones. Any advice would be great thanks Dave |
#2
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Drilling concrete--error ot original question
"linkuk" wrote in message ... Any advice for what sort of drills to use for drilling old very tough concrete. No holes will be less that 6 mm diameter. I bought some from B&Q that were supposed to be for concrete but they were a miserable failurs so were probably cheap and nasty ones. Any advice would be great thanks Dave I meant no hole will be GREATER than 10mm. Thanks |
#3
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Drilling concrete--error ot original question
linkuk wrote:
"linkuk" wrote in message ... Any advice for what sort of drills to use for drilling old very tough concrete. No holes will be less that 6 mm diameter. I bought some from B&Q that were supposed to be for concrete but they were a miserable failurs so were probably cheap and nasty ones. I meant no hole will be GREATER than 10mm. What sort of power drill are you using? Do you need one hole, or ten thousand? |
#4
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Drilling concrete--error ot original question
"Ian Stirling" wrote in message ... linkuk wrote: "linkuk" wrote in message ... Any advice for what sort of drills to use for drilling old very tough concrete. No holes will be less that 6 mm diameter. I bought some from B&Q that were supposed to be for concrete but they were a miserable failurs so were probably cheap and nasty ones. I meant no hole will be GREATER than 10mm. What sort of power drill are you using? Do you need one hole, or ten thousand? Not just one but maybe a couple of dozen or so spread over a period of time while in going through decoration rooms and replacing poor fixtures etc put up by previous people but which are inadequte. Thanks |
#5
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Drilling concrete--error ot original question
"Ian Stirling" wrote in message ... linkuk wrote: "linkuk" wrote in message ... Any advice for what sort of drills to use for drilling old very tough concrete. No holes will be less that 6 mm diameter. I bought some from B&Q that were supposed to be for concrete but they were a miserable failurs so were probably cheap and nasty ones. I meant no hole will be GREATER than 10mm. What sort of power drill are you using? Do you need one hole, or ten thousand? Sorry forgot the first question: Its a bosch mains drills with hammer action. |
#6
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Drilling concrete--error ot original question
linkuk wrote:
"Ian Stirling" wrote in message ... linkuk wrote: "linkuk" wrote in message ... Any advice for what sort of drills to use for drilling old very tough concrete. No holes will be less that 6 mm diameter. I bought some from B&Q that were supposed to be for concrete but they were a miserable failurs so were probably cheap and nasty ones. I meant no hole will be GREATER than 10mm. What sort of power drill are you using? Do you need one hole, or ten thousand? Sorry forgot the first question: Its a bosch mains drills with hammer action. For occasional holes. Simply taking any masonry bit, and leaning on it with the drill on hammer action, with the chuck fastened, with more or less any drill, going round the right way will work. SDS is not needed - but will make the holes take well under a minute to drill, instead of well over a minute to drill. If the holes are vertical downwards, occasionally blowing out the holes can help. if they are horizontal, removing the drill from the hole several times during drilling helps. You need to lean on the drill enough so that the hammer action engages. |
#7
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Drilling concrete--error ot original question
The message
from Ian Stirling contains these words: SDS is not needed - You've not tried the walls round here. Using even very good quality masonry bits, in a hammer drill or hitting the end with a hammer, just didn't go in. I've drilled holes in masonry all over the country in various jobs, but for well aged concrete SDS is sometimes the only way to go. Other people in the row have had the same problem - nothing will go in in a reasonable [1] time. [1] Less than half an hour of sweating and swearing. -- Skipweasel Pay no attention to that man behind the curtain. |
#8
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Drilling concrete--error ot original question
Ian Stirling wrote:
Simply taking any masonry bit, and leaning on it with the drill on hammer action, with the chuck fastened, with more or less any drill, going round the right way will work. before I got the SDS I was getting through 6mm bits pretty quickly - bought a B+D "pyranha" (IIRC) bit which was quicker and lasted much better - still got it but it's getting a bit blunt now. -- Spamtrap in use To email replace 127.0.0.1 with blueyonder dot co dot uk |
#9
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Drilling concrete--error ot original question
In article ,
linkuk wrote: What sort of power drill are you using? Do you need one hole, or ten thousand? Sorry forgot the first question: Its a bosch mains drills with hammer action. If the concrete is hard it will laugh at a hammer drill and masonry bit. The only way to go is SDS. -- *Avoid clichés like the plague. (They're old hat.) * Dave Plowman London SW To e-mail, change noise into sound. |
#10
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Drilling concrete--error ot original question
Dave Plowman (News) wrote:
In article , linkuk wrote: What sort of power drill are you using? Do you need one hole, or ten thousand? Sorry forgot the first question: Its a bosch mains drills with hammer action. If the concrete is hard it will laugh at a hammer drill and masonry bit. The only way to go is SDS. Why? SDS is only how the bit is held in, it says nothing about the power of the drill, its hammer action, or the quality of the bit being used, all of which seem rather more relevant than three letter painted on the side of the drill casing... I have found the BIT quality to be the key thing, followed by a good hammer action. You need to smash through embedded flints. This takes more than a run of the mill masonry bit. |
#11
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Drilling concrete--error ot original question
linkuk wrote:
"linkuk" wrote... Any advice for what sort of drills to use for drilling old very tough concrete. No holes will be less that 6 mm diameter. I bought some from B&Q that were supposed to be for concrete but they were a miserable failurs so were probably cheap and nasty ones. Do you mean drill bits for your existing "conventional hammer" drill? If so, then drill smaller diameter pilot holes (e.g. 5mm) and then use the larger size. Don't push hard when using the larger diameter. Any advice would be great I meant no hole will be GREATER than 10mm. If you want to buy a drill just for drilling holes in masonry, that you're going to use for more than the odd hole, but a cheap "SDS" drill, and use virtually any brand/cost bit. |
#12
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Drilling concrete
The message
from "linkuk" contains these words: Any advice for what sort of drills to use for drilling old very tough concrete. No holes will be less that 6 mm diameter. B&Q and all the other places do cheap SDS drills. They're magic and will sail through even well hardened old concrete. The walls here are concrete and I bust loads of drills and took nearly a day to drill five holes once (luckily the neighbour that side was utterly deaf). SDS drill just slides in - about twenty seconds for a 3" deep 10mm hole. Cost about £30. The all look like this... http://www.screwfix.com/app/sfd/cat/...18678&id=58494 -- Skipweasel Pay no attention to that man behind the curtain. |
#13
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Drilling concrete
Guy King wrote:
The all look like this... http://www.screwfix.com/app/sfd/cat/...18678&id=58494 appart from the decent light weight ones that look more like:- http://www.screwfix.com/app/sfd/cat/...54139&ts=29848 The OP might want to look at the Drills and Drilling FAQ as well: http://www.diyfaq.org.uk/powertools/drillfaq.htm and the SDS one: http://www.diyfaq.org.uk/powertools/sds.htm -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#14
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Drilling concrete
The message
from John Rumm contains these words: http://www.screwfix.com/app/sfd/cat/...18678&id=58494 appart from the decent light weight ones that look more like:- http://www.screwfix.com/app/sfd/cat/...54139&ts=29848 As far as I know, none of the cheapies look like that, which was the point I was making. Oh, and for some reason B&Q don't put the SDS cheapie with the other drills - it's off somewhere else. Talking of cheapies. I bought a pull-mitre saw today from Argos. And it's going back first thing in the morning. The pull slide is supposed (I hope) to be supported on bearings, but this one has a nasty groove up the slide and makes a horrid grating noise. And it's not really very well made, either. So I'll go get the B&Q one instead. -- Skipweasel Pay no attention to that man behind the curtain. |
#15
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Drilling concrete
Guy King wrote:
The message from John Rumm contains these words: http://www.screwfix.com/app/sfd/cat/...18678&id=58494 appart from the decent light weight ones that look more like:- http://www.screwfix.com/app/sfd/cat/...54139&ts=29848 As far as I know, none of the cheapies look like that, which was the point I was making. Appart from: http://www.toolstation.com/shop/Powe...ols/d40/sd2670 (second one down) ;-) -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#16
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Drilling concrete
The message
from John Rumm contains these words: As far as I know, none of the cheapies look like that, which was the point I was making. Appart from: http://www.toolstation.com/shop/Powe...ols/d40/sd2670 (second one down) ;-) That's not a cheapie - that's 50 quid! -- Skipweasel Pay no attention to that man behind the curtain. |
#17
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Drilling concrete
The machine is more important than the drill bit. A mains powered SDS
drill is the way to go. |
#18
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Drilling concrete
For £25 - £35 you should be able to pickup an SDS drill from the
sheds or internet. |
#19
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Drilling concrete
Netto had some half-decent[1] ones a fortnight ago, might still have a few
left? They came with a handful of SDS bits and chisels, spare brushes etc for about 20 squid Dave H. (The engineer formerly known as Homeless) [1] Looks rather identical to the Screwfix one, actually, and has the bits included, so I bought one just for wall chasing (my Bosch GBH doesn't have a rotation stop). Got to get the tool collection mania under control... The baby table saw wasn't bad, either (OK for small work, eg frame + panel doors, wouldn't want to run joists through it...) wrote in message ups.com... The machine is more important than the drill bit. A mains powered SDS drill is the way to go. |
#20
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Drilling concrete
Dave H. wrote:
Netto had some half-decent[1] ones a fortnight ago, might still have a few left? They came with a handful of SDS bits and chisels, spare brushes etc for about 20 squid Dave H. (The engineer formerly known as Homeless) [1] Looks rather identical to the Screwfix one, actually, and has the bits included, so I bought one just for wall chasing (my Bosch GBH doesn't have a rotation stop). Got to get the tool collection mania under control... The baby table saw wasn't bad, either (OK for small work, eg frame + panel doors, wouldn't want to run joists through it...) wrote in message ups.com... The machine is more important than the drill bit. A mains powered SDS drill is the way to go. 6 years ago I moved into bungalow that needed a lot of TLC. I used countless drills on the bricks, which are Staffordshires. when I had almost finished I bought an SDS, now hot knife and butter comes to mind. If the trouble and strife is against the spend get her to try drilling the holes. ;-) -- Please do not reply to this Email address, as all Emails are deleted before opened. |
#21
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Drilling concrete
for 10mm, i think SDS is advisable. I got a bosch sds, its very
effective and drills really fast. hammer drills are better for drilling through tiles than a rotary hammer though |
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