- Thread starter mart
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brightspark
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carbide or diamond. if diamond get a Norton or similar not cheap but you get what you pay for
123hotchef
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hell yes dont get cheap i have a ok et from screwfix but purchased a couple from ebay tried them out the other week and the threads stripped right out!
Pete.
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Pretty sure I replied to this earlier, perhaps I didn't send it.
Anyway, for concrete block pretty much any diamond drill bit will do. If they are not bone dry you'll need to use water.
Pete.
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The thin walled 5" drill bits will do that but you absolutely must use water coolant or you'll cook the diamond segments.
Ebay has this:
https://www.ebay.co.uk/itm/127mm-x-165mm-NEW-Dry-Diamond-Core-Drill/233135466491
Ebay has this:
https://www.ebay.co.uk/itm/127mm-x-165mm-NEW-Dry-Diamond-Core-Drill/233135466491
brightspark
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all the prefab conctete garage panels have reinforcement rods through them
brightspark
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that's hilti . well over priced but good quality. having said that the amount they made of the job well compensated for the outlayAnyone else thinking Hatton Garden?
surprised hilti didn't use it for advertisement on how good they are 
Pete.
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Yep they at least have wire in them. 4 or 5mm smooth wire mesh or thereabouts usually.
bigegg
Scream Not Working Because Space Make Deaf
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ive already removed/smashed one of the panels to fit a side door.
reinforcement in the thicker "frame" of the panel.
the thinner infill part does not have any.
bigegg
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its old - 40-50 years at a guess.
ive had it 30 years, and it was my auntie's before that - she replaced it because it was "old"
brightspark
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only ever heard of the bosch ones on that list
chunkolini
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Hilti
mart
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Pete, or anyone else. What is the difference between the diamond core drills where one is described as dry and another as wet? Using cooling water is logical and makes sense, but are we missing something in respect of those specified as dry?
mart
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This 127mm dia will be big enough for your 5 inch hole panel job. These Diamond Jack brands seem thicker at the business end than others I have seen. I don`t know if that is a good thing or not.
http://www.diamondjack.net/index.php?main_page=product_info&cPath=5_18_31&products_id=582
There is a guy on E Bay selling what appears to be the same thing but a lot cheaper??
Here is a link to the 127 mm size.
https://www.ebay.co.uk/itm/Diamond-...m=202594597633&_trksid=p2047675.c100005.m1851
Iv drilled hundreds of holes with 5" and small and wet and damp is not your friend it turns the dust to sludge and the core gets jammed do it dry and keep pulling the core out to clean the dust and pulling the spinning core out cools it in the air.
And what are you drilling modern blocks bricks ? are fine quite soft it the old stuff that gets interesting some of the old bricks are blue inside and you might as well be trying to drill metal
And what are you drilling modern blocks bricks ? are fine quite soft it the old stuff that gets interesting some of the old bricks are blue inside and you might as well be trying to drill metal
