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Discuss Marcrist Core set with dust extract in the Electrical Tools and Products area at ElectrciansForums.co.uk.

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  1. 123
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    123 Electrician's Arms

    Has anyone used one of these? Have a few jobs coming up that need a fan cored through red brick wall which tend to be a nightmare as the wall is wet and the dust jams the core drill.

    This is the item
     
  2. spinlondon
    Online

    spinlondon Forum Mentor

    Location:
    Harlow Essex
    If the wall is wet, you might be better to use a core drill that uses water.
     
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  3. Midwest
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    Midwest Electrician's Arms

    Location:
    Oxfordshire
    Agree with above; burnt out one core drill with just one hole in wet garden brick work. If wet core drilling is available for hire, I'd go with that.
     
  4. 123
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    123 Electrician's Arms

    Not keen on the idea of wet core drilling, the jobs are domestic bathrooms, and I'd imagine the clean up operation after 1 core will be a nightmare. There is no issue doing the core dry, it's just it takes around an hour on average and it's the wet/damp dust that slows things down, if the kit in my opening post brought that down to 30 mins, then happy days.
     
  5. Owain Thomas
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    Owain Thomas EF Member

    Location:
    Newport, Wales
    I’ve got the exact kit and use it with a Karcher Vac. It works great, hardly any dust and because it extracts the dust it keeps the cutter cooler so it’s lasting longer.
     
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  6. Dobes_88
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    Dobes_88 Jamie Electrician's Arms

    Location:
    Surrey
    Chap on Youtube has done a bit of a review on it -

     
  7. HandySparks
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    HandySparks Forum Mentor

    Location:
    Hampshire
    Business Name:
    Neish Electrical Services
    The Marcrist dust extract system is pretty good.
    A few issues:
    If using a core bit with slots, you need to tape them up to stop the dust flying out. The tape wears off and needs renewing for each hole drilled.
    Using a Henry works OK, but I suspect that the restriction in airflow causes the Henry to get too hot from lack of ventilation. Maybe need to allow some extra air to bleed in.
    I start my cores by screwing a disc of wood to the wall, cut to the inside diameter of the core, as a guide. You don't need a pilot bit so can use extract from the start. Once you're a few millimeters in, you can remove the guide block.
     
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  8. Owain Thomas
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    Owain Thomas EF Member

    Location:
    Newport, Wales
    You can use the extractor system with the A taper pilot drill from the start anyway.
     
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