hello can any of you lads recommend a decent core drill to buy,,,ive had enough of hiring them and fancy my own,,,the last couple Ive hired one nearly tore my arms out the sockets when drilling around 10 holes,,,not sure what make it was,,,kept spinning out of my grip no matter how tight i held on,,,too much power???,,,the other was a marcrist which worked like a dream and cut through the wall like a hot knife through butter......
core drill recomendations please......
- Thread starter sonofrob
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Which ever machine you buy ensure that it has a clutch - lucky you didn't do yourself a serious injury.
Metabo BDE1100
Makita DMB131
Dewalt D21570
There you go. Good make.
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I wouldn't want to drill an extractor fan hole with an 18 volt cordless.
With regard to the technique, yes it is important but I have had bits grab halfway through a 9 inch wall when bricks have broken and impeded the progress of the core bit. I was not applying undue pressure at the time. It's under those circumstances that you appreciate a safety clutch.
In short, I do not agree that "any" drill will suffice. Sorry, I have agreed with many of your previous posts, but not this one.
I see that the Makita has its own water cooling. How effective is it?
BTW, thanks for the recommendations. I really should get a proper core drill...
Yes you are right, a clutch is better to have.
I was being perhaps a bit too glib, but the drill I use most often does not have a clutch. I'm aware of it and don't tend to be caught unawares. But if the wall was going to be tough, or I had loads of holes to cut then I would consider using another model with clutch or a specific core drill.
Fair play.
For the record, I once ruined a rather expensive marble bath top whilst drilling a 25mm core for the pull out hand shower. I had already cut the hole in the marble and then had to cut down and through the steel bath. I was using my cordless drill, drilling slowly but clearly zoned out at some point. The core bit snagged. I hadn't set the torque. When it snagged my finger was jammed against the trigger. In a panic I yanked the drill. It made a shallow but 10mm long splinter of marble.
It was large enough to be seen when the fitting was installed. I ended up paying a firm £75 to (next day) make what basically a large washer out of polished stainless steel to put under the fitting.
I fessed up to the client. They were ok (fortunately).
I would no longer want to use a drill without a clutch, not just because of safety but additionally because some mistakes can be expensive.
https://www.screwfix.com/p/dewalt-d...gclsrc=aw.ds&dclid=CIfF6qy4ttcCFY6hUQodAScL9g
IveGot one of these no problems and its worked great.
IveGot one of these no problems and its worked great.
i went for the same dewalt also mate,,,after reading a lot of reviews on each drill this one seemed the one to get,,,with the erbauer core drill set,,,is it just me or do other people love buying new tools,,,???,,,I enjoy going to the tool shop just as much as buying new clothes,,,
......
I bought a new Dewalt D21570. On the 3rd use (I was actually using it on the hammer action to put a 22mm masonry bit through a half (engineering) brick garden wall) it was struggling and the clutch was working hard and the motor was getting quite warm (but no more so than any of my other Bosch or Dewalt drills) - I was reassured that the fancy electronic protection system would kick in and protect the drill if necessary.
Drill stopped, "problem" light came on. Dewalt service centre laughed, diagnosed burnt out motor without any examination, laughed again when I mentioned the electronic protection system and said they'd stopped selling this model themselves as it was upsetting their customers! Dewalt replaced motor and I still have it but have no trust in it and "nurse" it every time I use it. I would have put it down to bad luck were it not for the opinion of the Dewalt service centre on this particular model.
Drill stopped, "problem" light came on. Dewalt service centre laughed, diagnosed burnt out motor without any examination, laughed again when I mentioned the electronic protection system and said they'd stopped selling this model themselves as it was upsetting their customers! Dewalt replaced motor and I still have it but have no trust in it and "nurse" it every time I use it. I would have put it down to bad luck were it not for the opinion of the Dewalt service centre on this particular model.
Just an update on this, it's replacement managed 3 more 127mm cores and a couple of 50mm cores through Accrington cavity walls before the clutch failed - I managed to pick up a used (knackered motor obviously) drill on eBay and swapped the gearbox over, it then managed another 110mm core through a cavity wall and one through a single leaf wall. It failed on the latest job - got through the thermalite and about 20mm through the outer brick before the motor burnt out.
A complete pile of crap - they even sell a motor replacement kit - if that's not an acknowledgement of a substandard tool I don't know what is.
I'm getting a Makita 8406.
A complete pile of crap - they even sell a motor replacement kit - if that's not an acknowledgement of a substandard tool I don't know what is.
I'm getting a Makita 8406.
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That has no reverse gear, which would irritate me when trying to dislodge a jam. Get a Bosch GSB 162-2 RE. Anything cheaper, which says it is 'variable speed', seems to just mean via the trigger only, rather than a dial to set the speed properly for consistency.
I've used a few 8406s and the clutch is invariably so weak you can safely hold it with one hand
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