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Topic Title: 4" Diamond Core drill
Topic Summary: Your recomendations please
Created On: 27 April 2013 05:23 PM
Status: Post and Reply
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 27 April 2013 05:23 PM
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Avatar for dbullard.
dbullard

Posts: 1166
Joined: 02 March 2006

Hi all,

I have a number of jobs coming up that require 4" holes for fans and extract systems, now the Silverline set had served me very well but its time to spend some money and get a decent 4" one.

What do use and how do they last, I have a propriety core drill but the cheaper stuff just ain't lasting anymore

Regards

Daren

-------------------------
..... Dont pee in my pocket and tell me its raining ......


www.quest-electrical-sw.co.uk
 27 April 2013 05:40 PM
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Avatar for sparkiemike.
sparkiemike

Posts: 1537
Joined: 24 January 2008

I don't have one, but when I hire from my local hire centre it is Makita 8406 Diamond Core Drill, seems to stand up well the abuse thrown at it.
 27 April 2013 06:13 PM
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DOUGIE1000

Posts: 4164
Joined: 13 August 2005

Got a new 6 inch core couple weeks ago, sds 300mm extension from local ironmongers, its made by 'hardman'. I show it a wall and it cuts it...... job done.

If it lasts 10 cores then it cost me no more than a fiver a cut so I'm happy.

-------------------------
Dougie
Power Plus Electrical.co.uk

My mission is to live as long as possible......so far so good!
 28 April 2013 09:58 AM
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unshockable

Posts: 845
Joined: 18 May 2007

Darren

You say that you have the proprietary drill, it seems to me that all the money is in them. When necessary I have used my Bosch SDS but it is rubbish for the clutch; possibly ruining the warranty.

I read the instructions on my Rothenberger dry diamond set, which I can recommend, and I'm sure it told me to drill a 13mm pilot? I have 12 and 14 but no 13mm sds, what I ended up doing was 16mm and put in a length of 15mm copper pipe, it fits like a glove. This has the advantage of being able to drill through a 18" wall and meet in the middle, drill crumbly walls etc.

Simon
 28 April 2013 11:38 AM
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Avatar for dbullard.
dbullard

Posts: 1166
Joined: 02 March 2006

Cheers Simon,

I was also using a SDS drill but Makita, and I was afraid of the clutch issue so purchased a cheapy core drill from Sparky as the wall chaser I use has been really good so opted for the cheaper end as I do maybe 3 or 4 a year but all my work seems to be in older houses.

I may opt for the rothenburger 4" as them seem popular with the pluming fraternity.

Cheers all


Daren

-------------------------
..... Dont pee in my pocket and tell me its raining ......


www.quest-electrical-sw.co.uk
 28 April 2013 06:07 PM
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maltrefor

Posts: 116
Joined: 01 November 2009

The company that I work for use these and have several machines as we install many domestic fans each week:-

coredrillingmachines.co.uk/


The core drills are from:-

marcrist.co.uk/prod...aspx?pp=d_b_8_null_750

(just add the www. yourself)
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