How to cut/bend 28mm copper in awkward place?

[stevethejoiner]

I am installing a wood stove with a boiler in my fireplace. I have a decorative oak mantle and surround with feature brickwork and do not want to spoil it by running pipes around the outside.
Unfortunately the only 28 mm copper fittings I can find are 90 and 45 degree angle but if I core drill at 45 degrees from the outside the fireplace opening at point A on my drawing, through to the inside of the fireplace opening I have to join/bend the pipe within the brick wall.
To exit the core drill at the desired point inside my fireplace opening at point B on my drawing the angle is more like 30 degrees.

Does anyone have an idea how I can get the 28mm copper flow and returns through the wall from point A to point B so that I can join them onto wood stove as I show in the third drawing, which views the pipework from behind the fire?

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• stevethejoiner
• 11 Jan 2012
• 1

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• stevethejoiner
• 11 Jan 2012
• 1

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• stevethejoiner
• 11 Jan 2012
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[Dan Robinson]

A pipe bender .

Floorstanding or electric handheld.

I have the latter.

 

[stevethejoiner]

A pipe bender .

Floorstanding or electric handheld.

I have the latter.

Thanks Dan, but excuse my ignorance and can I ask how?

I actually have an old floor standing bender, it has imperial dies and I was going to try and get metric for it or hire one. But I still cant fathom where to bend the pipe.

If I drill a hole, even one quite a bit larger than the 28mm copper through my wall, I would not be able to get the pipe with a bend on it through the hole, and I cant see how I can bend it in-situ.

Thanks Steve.

 

[Dan Robinson]

What's wrong with drilling the hole at an angle to suit?

You certainly can't bend 28mm copper in situ.

 

[picasso]

You cant unless you drill a really big hole

if you have a drill bit long enough

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[matt1e]

As Dan and picasso has already stated why cant you drill straight through?
if you make sure the two holes are enough above the wood stove fittings
using two 90's where the pipes come through into the opening will get your pipework plumb
then go from there

Matt

 

[Charnwood]

I was going to try and get metric for it

1" and 28mm copper are virtualy the same OD. You should get away with 1" guides.

 

[stevethejoiner]

Thanks guys,

I couldn't get my head around how to do it, I was thinking the pipe going through the brickwork would have to be bent or at least use fittings of the correct angle, but with your suggestions I have worked out there is room to put a straight pipe through the wall and sweat straight couplings connecting to pipe that I have pre bent and cut to length.

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• stevethejoiner
• 11 Jan 2012
• 1

And yes the holes will be a very long, but that's ok with extensions on the bit.
Thanks again.

 

[stevethejoiner]

Thanks guys,

I couldn't get my head around how to do it, I was thinking the pipe going through the brickwork would have to be bent or at least use fittings of the correct angle, but with your suggestions I have worked out there is room to put a straight pipe through the wall and sweat straight couplings connecting to pipe that I have pre bent and cut to length.

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• stevethejoiner
• 11 Jan 2012
• 1

And yes the holes will be a very long, but that's ok with extensions on the bit.
Thanks again.

And now I have drawn it, it's so obvious, what an idiot?

 

[stevethejoiner]

As Dan and picasso has already stated why cant you drill straight through?
if you make sure the two holes are enough above the wood stove fittings
using two 90's where the pipes come through into the opening will get your pipework plumb
then go from there

Matt

Yes thanks Matt, I can see that working as well, I may be able to use 90s instead of doing bends but I want to keep the pipes as low as possible when they exit the brickwork into the lounge as they are to be hidden in a low cabinet until they rise to the ceiling. But i will see.

Thanks.