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New drill 1100 W @ 230 V

Discussion in 'Electrical Engineering' started by Tzortzakakis Dimitrios, Oct 29, 2008.

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  1. Hi everyone,
    as the subject line implies, I got this drill recently and works like a
    dream:) It's chinese, of course, and of a brand I've never heard before, is
    not pneumatic but a traditional percussion drill. I hardly ever operate it
    at full power (it has an electronic triac drive). It cost 27 euros, from
    makro www.makro.gr a cash & carry chain in Greece. My previous 2 were
    genuine Black & Decker, and although they cost more than 75 euros each, I
    smoked both (literally) this year, how strange that a no name chinese brand
    is better! (I have put it to drill everything possible, including 15 " @
    3/8" of solid beton, all kind of small holes in solid beton without any
    problems with common off-the-shelf tungsten carbide bits, the very cheap
    ones like 70 cents each. I didn't even need the special blue "extra hard"
    bits, which I had specially purchased for my Black & Decker, which without
    them couldn't bore a hole in a ceiling, to hang lights and ceiling fans.
    Conclusion: don't underestimate the Chinese!
     
  2. We have a lot of cheap Chinese SDS drills in the UK now, at
    that sort of price. They are very popular, and at that price,
    you don't need to worry too much if you get caught with a bad
    one, although I don't hear many stories of bad ones.

    One thing to be aware of though is that such drills may not
    have a safety clutch. A powerful SDS drill, unlike a less
    powerfull conventional drill, doesn't just stall when the
    bit gets jammed. Depending on the bit, it either snaps it,
    or the clutch slips if it has one, or the drill body spins.
    If the drill body spins it can do you some serious damage;
    dislocated wrists are not uncommon, and a friend of mine
    ended up in ER having stitches in his chin after one spun
    and whacked him in the face. The more expensive and more
    professional SDS drills all have safety clutches, but a
    cheap one in inexperienced hands can be a recipe for an
    accident, particularly if you are unaware of the hazard.
     
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