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27th Dec 2007, 01:25 AM
| | Novice | | Join Date: Sep 2007 Location: Sydney
Posts: 43
| |  Best way to cut 100mm hole in besser block?
Hi guys,
I need to cut a 100mm hole in besser block to run a pvc tube through. I need a neat hole and once pvc tube is through, I'll need to seal it (that is between block and tube).
Can anyone please advise me what's the best way to do this and what tools "ill require?
Thanks,
Julie |
27th Dec 2007, 02:08 PM
| | Senior Member | | Join Date: Feb 2007 Location: Sydney
Posts: 131
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Best looking hole will be made with a 'core drill'
Expensive option for just one usage though.
Do you know someone who installs air-conditioning? A lot of them have core drills ranging in size from 60/70mm up to 100mm
Otherwise you could do a messy hole & fit a skirt around the pipe to hide it. |
27th Dec 2007, 02:17 PM
| | Senior Member | | Join Date: Jun 2007 Location: Perth, WA
Posts: 112
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27th Dec 2007, 02:26 PM
|  | That's SIR!!......Not CUR | | Join Date: Jul 2003 Location: On the Downs, Darling SEQld
Posts: 355
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If you can,
go bigger than the 100mm.
Cut a section of the 100mm Pipe, about 250mm or 350mm long;
depending on Block Width;
slit it,
and open it up and slip it over the Main Pipe where the Pipe goes through the Block.
Seal around the Sleeve.
__________________
Navvi |
27th Dec 2007, 07:33 PM
|  | Most Valued Member | | Join Date: Feb 2003 Location: Timboon VIC AUSTRALIA
Posts: 2,753
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I cut a 100mm hole through a block wall so i could put my dust extractor outside.
I just drilled a series of holes around the perimeter and knocked the centre out.
I smoothed the hole up for a neat fit with a cold chisel & hammer. (tapping the chisel - not belting it hard)
The whole job only took an hour or so |
27th Dec 2007, 08:39 PM
|  | Diamond Member | | Join Date: Oct 2003 Location: Kentucky NSW near Tamworth, Australia Age: 72
Posts: 1,204
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Quote:
Originally Posted by memphis  | That would be great at a reasonable price but you would want a decent drill to drive it and you would really want to hang on if it grabbed. You would want a drill with a clutch in it like the old 1/2" Blue Bosch that I have.
__________________ Regards Bazza
Skype Username: bazzabushy "Experience is a hard teacher because she gives the test first, the lesson afterwards." -Vernon Sanders Law The views expressed by the poster are general in nature and any advice should be taken in this vein. The poster accepts no responsibility if this advice is used. When undertaking any work personal professional advice should be sought from suitably qualified persons in the field of work being undertaken.
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27th Dec 2007, 08:40 PM
|  | Landscaper | | Join Date: May 2007 Location: Bundoora, Melbourne
Posts: 340
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As echidna said. There was a thread on this a few weeks back, but into house bricks, same applies.
Just trace you pvc piece onto the block and put a masonry bit around the perimeter as close as possible without it dropping into the hole you've just drilled. |
27th Dec 2007, 11:14 PM
| | Member | | Join Date: Aug 2004 Location: sydney
Posts: 78
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can you take your block somewhere?
There's a mob that do core drilling and concrete sawing in sydney (diacore I think they were called) - I was looking at getting some blocks core drilled to install lights. |
3rd Nov 2009, 04:43 AM
| | Apprentice (new member) | | Join Date: Nov 2009 Location: Perth
Posts: 2
| | Besser Blocks
Sorry to bud in here, but does anybody know where I can get Besser Blocks in Perth?
Regards
Julie | |
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