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Discuss How many holes do you get? in the Plumbing Tools area at

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  1. jaydebruyne

    jaydebruyne Plumber GSR

    how many holes (roughly) you get from a 5" diamond core bit? Mines an erbauer from screwfix.
  2. Last Plumber

    Last Plumber Plumber GSR

    Suppose it depends on whether you're cutting Engineering brick or breeze Block
    • Agree Agree x 1
  3. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    Normally if there cheap 10-15 but as last said if you have a few hard ones will shorten it to manybe 5-10
  4. jaydebruyne

    jaydebruyne Plumber GSR

    That explains it then lol. Took ages to get through 1 brick. Bought a new bit and got through the other one in 10 mins!!
  5. SimonG

    SimonG Trusted Plumber Top Contributor!!

    Aye depends what you are cutting. Mine seem to last well, but a lot of sandstone round here and easy cutting.
  6. Harvest Fields

    Harvest Fields Trusted Plumber GSR Top Contributor!!

    I have never counted to be fair. But mine is on its last legs now. I think that it is a Marcrist. But I have had it about 3 years. But I have been lucky and cannot actually remember the last time I used it.:D:D
  7. jaydebruyne

    jaydebruyne Plumber GSR

    Yeah I've not counted either but I reckon it's around 10 or so..
  8. mfgs

    mfgs Plumber GSR

    Never rated the erbauer core bits. My last set was a Rothenberger one, which lasted quite well. Had Marcrist as well before which are very good. As for the number of holes, I wouldn't have a clue. But I would estimate at 40+
  9. jaydebruyne

    jaydebruyne Plumber GSR

    Bloomin eck 40 ain't a bad number..
  10. Rogerf

    Rogerf New Member

    Using the right drill makes a big difference, most of my kit is Marita, but core drill is a dewalt , can't fault it.
  11. Whale

    Whale New Member

    iv not counted but id say about 20 if i dont keep drilling though the metal cladding as well
  12. jaydebruyne

    jaydebruyne Plumber GSR

    I've done that before.. spent most of the day getting through that
  13. jaydebruyne

    jaydebruyne Plumber GSR

    My core drill is a Makita, it's done me well. Not a fan of Dewalt. Only Makita tool let e down was a percussion drill. Have sent it for repair twice!
  14. Whale

    Whale New Member

    it's loads of fun shame one hole though metal cladding and all the teeth are worn down
  15. AWheating

    AWheating Trusted Plumber GSR

    A good core should do 50+ holes easy aslong as your drilling fairly hard bricks. Alot of soft bricks are very abrasive and wear down your bit very fast, 10 holes on those bricks is good
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