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I take it you know for a fact that the core drill is genuine Marcrist? Just thinking that it could possibly be a fake.

Don't laugh, there are plenty of fake power tools out there, so it could happen to core cutters too!! Infact I think I've seen something about fake Bosch angle grinder discs.

Don't know what make my latest set of core cutters is....cost me around £200 for a full set of about 5, plus augers, SDS and conventional. Broke a tooth off one the first time I used it, going through a reinfored concrete slab. I know how you feel. Gutting.

I still have my set before that, which is ancient. I tend to keep a worn set for drilling anything liable to damage them. I'm about due a new set. I'll check out some of the suggestions given. Thanks.
 
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A while back there were guys doing the rounds of the sites selling Makita and DeWalt stuff that was fake. All plastic gears that broke in a few weeks.
Always try to buy tools from reputable places.
 
I would take it straight back to them and get your money back or a replacement. We are a diamond core UK manufacturer and if any customer has used our products incorrectly and notified us about it then we have ALWAYS swapped out the diamond core drill bit for them.

What I find suprising as a factory owner is how much installers will blame themselves or the work conditions for the failure of equipment rather than blame the equipment. Note there is a lot of marketing costs that go into some products and often its a good chunk of the cost of the item. You can sometimes not tell the difference between a cheap drill and an expensive drill. A lot of it is branding.

My advice to end with is the same as it was to begin with. Dont take it laying down. Get a refund or a replacement. Insist on it.
 
just to let you guys know, Ive just got off the phone to marcrist. I explained what i had used it for and what drill i had used and he told me to send it back for a brand new replacement plus some compensation for courier costs

now what a service for marcrist!!! so glad i bought a reptiable brand. Be sure though i will never use a core bit on a no fines wall again
 

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