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  • FIRST POST
    • no1catman
    • By no1catman 15th May 16, 1:25 PM
    • 2,541Posts
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    no1catman
    Problem drilling into a wall
    • #1
    • 15th May 16, 1:25 PM
    Problem drilling into a wall 15th May 16 at 1:25 PM
    I have a garage constructed with concrete sections - about four inches thick, and pebble dashed on the outside.


    I trying to drill holes in it, all I seem to achieve is a slight crater!


    It has been done in the past - had a PIR security light fitted, and have managed hols in the past - with difficulty. But now, after alignment, the 'hole' must be in a position - through a chipping.


    It doesn't seem to make any difference what size masonry drill I use.
    So, is it the drill I'm using not being powerful enough? Mine is 810 watt.
    I used to work for Tesco - now retired - speciality Clubcard
Page 1
    • DTDfanBoy
    • By DTDfanBoy 15th May 16, 1:44 PM
    • 1,676 Posts
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    DTDfanBoy
    • #2
    • 15th May 16, 1:44 PM
    • #2
    • 15th May 16, 1:44 PM
    I assume you are using a hammer drill ???

    It may well be the masonry bits you are using, I find that the De Walt Extreme 2 bits work very well.
    • RichardD1970
    • By RichardD1970 15th May 16, 2:12 PM
    • 2,583 Posts
    • 3,777 Thanks
    RichardD1970
    • #3
    • 15th May 16, 2:12 PM
    • #3
    • 15th May 16, 2:12 PM
    My house has concrete wall and I struggled for years with a normal hammer drill.

    Last year I splashed out and bought a Makita SDS drill. Wish I had done it years ago. Like drilling into butter!
    • no1catman
    • By no1catman 15th May 16, 4:54 PM
    • 2,541 Posts
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    no1catman
    • #4
    • 15th May 16, 4:54 PM
    • #4
    • 15th May 16, 4:54 PM
    I assume you are using a hammer drill ???

    It may well be the masonry bits you are using, I find that the De Walt Extreme 2 bits work very well.
    Originally posted by DTDfanBoy


    Yes, one I got from Wickes some years ago, tried the d/bits with the drill, and those from a Bosch set - no difference. Usually, the drill is great, but I hardly making any impression on this B*** wall.
    I used to work for Tesco - now retired - speciality Clubcard
    • Lorian
    • By Lorian 15th May 16, 4:57 PM
    • 4,044 Posts
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    Lorian
    • #5
    • 15th May 16, 4:57 PM
    • #5
    • 15th May 16, 4:57 PM
    Hammer mode is selected?


    (and do make sure you have safety glasses on)
    • no1catman
    • By no1catman 15th May 16, 5:05 PM
    • 2,541 Posts
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    no1catman
    • #6
    • 15th May 16, 5:05 PM
    • #6
    • 15th May 16, 5:05 PM
    Hammer mode is selected?


    (and do make sure you have safety glasses on)
    Originally posted by Lorian


    Yes, and no - only ordinary!
    I used to work for Tesco - now retired - speciality Clubcard
    • jakemillspaek
    • By jakemillspaek 15th May 16, 7:09 PM
    • 163 Posts
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    jakemillspaek
    • #7
    • 15th May 16, 7:09 PM
    • #7
    • 15th May 16, 7:09 PM
    I reckon your concrete walls are post tensioned. Take heed...although your walls are fairly thin it can still be dangerous.
    • jk0
    • By jk0 15th May 16, 7:52 PM
    • 1,964 Posts
    • 22,803 Thanks
    jk0
    • #8
    • 15th May 16, 7:52 PM
    • #8
    • 15th May 16, 7:52 PM
    You need one of these: http://www.diy.com/departments/bosch-550-w-corded-sds-rotary-hammer-drill-psbh2100re/174057_BQ.prd?gclid=Cj0KEQjwvOC5BRCb_8yNmZ_ls9IBEi QACTz8vgC2NwXPIM-ZTljOUbPfkR8lXX6A0swJ_qS_1sWSCMIaAuYK8P8HAQ&ppc_ty pe=shopping&ecamp=SEAPLA174057_BQ&ef_id=VwAwuAAAAB MxLWcD:20160515185014:s

    • no1catman
    • By no1catman 15th May 16, 8:04 PM
    • 2,541 Posts
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    no1catman
    • #9
    • 15th May 16, 8:04 PM
    • #9
    • 15th May 16, 8:04 PM
    Howabout this -


    http://www.tesco.com/direct/blackdecker-600w-corded-pneumatic-hammer-drill-kd860ka/211-3973.prd?pageLevel=&skuId=211-3973


    or even this -


    http://www.tesco.com/direct/silverline-hammer-drill-1010w/212-2308.prd?pageLevel=&skuId=212-2308
    I used to work for Tesco - now retired - speciality Clubcard
    • Silver-Surfer
    • By Silver-Surfer 15th May 16, 8:09 PM
    • 1,714 Posts
    • 1,020 Thanks
    Silver-Surfer
    You'd be better off buying this.

    http://www.screwfix.com/p/dewalt-d25033-sfgb-2kg-sds-plus-hammer-drill-240v/9062g
    • fezster
    • By fezster 15th May 16, 9:40 PM
    • 201 Posts
    • 102 Thanks
    fezster
    As per above. Use an SDS hammer drill. I struggled for years without and recently had to drill a number of holes for some CCTV cameras. The SDS drill goes through masonry like butter.
    • no1catman
    • By no1catman 16th May 16, 11:20 AM
    • 2,541 Posts
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    no1catman
    As per above. Use an SDS hammer drill. I struggled for years without and recently had to drill a number of holes for some CCTV cameras. The SDS drill goes through masonry like butter.
    Originally posted by fezster

    Interesting - checked out what SDS means, rechecked the Tesco site. The Black & Decker 860 (the 1st link - in my previous post) is an SDS machine, it is supplied by Tesco - so I can double-up my vouchers to get it!
    I used to work for Tesco - now retired - speciality Clubcard
    • DTDfanBoy
    • By DTDfanBoy 16th May 16, 12:04 PM
    • 1,676 Posts
    • 2,736 Thanks
    DTDfanBoy
    Before wasting a ton of money on a new drill why don't you spend less than £10 and try some decent drill bits, it really doesn't matter how good your drill is if you are using rubbish drill bits it will never perform.

    If you upgrade to SDS max or the like keep in mind you looking at £15+ per drill bit for anything decent.

    De Walt masonry bits £8.99
    Last edited by DTDfanBoy; 16-05-2016 at 12:07 PM.
    • fezster
    • By fezster 16th May 16, 3:37 PM
    • 201 Posts
    • 102 Thanks
    fezster
    SDS Max bits are expensive and more heavy duty. But SDS Plus is sufficient. The bits are not expensive either. I bought these:

    https://www.amazon.co.uk/gp/product/B003XV6ZFC/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

    https://www.amazon.co.uk/gp/product/B004GXUVJC/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
    • no1catman
    • By no1catman 16th May 16, 6:55 PM
    • 2,541 Posts
    • 1,948 Thanks
    no1catman
    Before wasting a ton of money on a new drill why don't you spend less than £10 and try some decent drill bits, it really doesn't matter how good your drill is if you are using rubbish drill bits it will never perform.

    If you upgrade to SDS max or the like keep in mind you looking at £15+ per drill bit for anything decent.

    De Walt masonry bits £8.99
    Originally posted by DTDfanBoy


    An update. Visited Screwfix - got a set of Bosch multi construction drills, told these go through anything, these blue ones are better than the De Walt ones.


    Anyway, the first hole wasn't too bad, went in using a '6' then a '7' to make it was wide enough for the plug. But the second one took an age, first go 1/4", after some several 'goes' gave up at an inch. Found it had worn away the shoulders of the drill!!
    Still, at last finally the troughs are up - all I need to do now is fill them up with compost & plants - only thing with their height I'll need a ladder - doh.
    I used to work for Tesco - now retired - speciality Clubcard
    • Mr.Generous
    • By Mr.Generous 16th May 16, 7:11 PM
    • 1,642 Posts
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    Mr.Generous
    I have a feeling an SDS would be too much on a concrete garage. Its a proper hammer drill, it wacks the wall with force where a normal drill has an eccentric cam and rattles a bit.
    Any tough masonry drilling I find drilling a very small pilot hole first helps loads. I agree the dewalt extreme bits are excellent btw, but most branded new bits are ok. Its the multi bit cheap sets that are dire.
    • Le_Kirk
    • By Le_Kirk 17th May 16, 10:14 AM
    • 2,078 Posts
    • 1,057 Thanks
    Le_Kirk
    If I have a "hard" surface to drill, I start by using a tile drill, the type used on ceramic glazed tiles. The drills are small diameter and sharp pointed (unlike normal masonry drills). Once through the initial hard top surface I then use "ordinary" masonry drills.
    • Rock_007
    • By Rock_007 9th Sep 17, 6:56 PM
    • 51 Posts
    • 14 Thanks
    Rock_007
    hi, not sure if it is the right place to ask.

    i am trying to drill into one of my house wall in order to make way to lay cable for shower, after removing the plaster i can see a black stone thats is quite hard to drill too not sure what is it and if is it okay to drill into this.

    link to the picture of the wall...
    https://ibb.co/gZB2Ya
    • Le_Kirk
    • By Le_Kirk 10th Sep 17, 11:06 AM
    • 2,078 Posts
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    Le_Kirk
    Answer given on your other thread!
    • firely2327
    • By firely2327 10th Sep 17, 9:15 PM
    • 125 Posts
    • 62 Thanks
    firely2327
    Yes, and no - only ordinary!
    Originally posted by no1catman


    You'll be kicking yourself if a rogue bit gets you, not worth chancing the sight in your eye. I got hit by a piece of masonry drilling with a hammer drill about a year ago, just below my eye. I was wearing the safety goggles but if I hadn't and the piece hit an inch further up....
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