6mm copper pipe repair ?

[JCplumb]

Evening chaps,
A customer of mine has put a nail through a 6mm heating pipe.
It's in a notched joist that holds about 8 other pipes just before they all bend down into the manifold, the other direction goes under a laminate floor so not a lot of room to work in the spaghetti junction that I have to repair tomorrow.
I'm thinking that cutting out a section and renewing with couplers will be a pain, don't really fancy disturbing the other pipes any more than I have to with it being so close to the compression fittings to the manifold.
I had a craaaaazy idea :6:

Will 8mm pipe, or 10mm pipe have a close enough internal diameter to solder a length sleeved over the damaged 6mm pipe?
I was thinking of cutting the 6mm where it is slightly more accessible and feeding a larger diameter copper pipe over the nail hole and the cut I made if you get what I mean? Then soldering both ends of the new larger diameter pipe as if it was one big slip coupling.
Has anyone done anything similar?
Oh, and this will mean I don't have to buy a 10m roll of 6mm that I will probably never use aswell as some stupidly priced 6mm couplers.
Cheers.

 

[gassafe]

Must be a very very clean system that one lol

 

[goz666]

8mm would've worked fine mate, I have a customer with some pipes in 6mm and first time I changed a rad of his I had the same problem. Cut with a hacksaw and filed for full bore the 6mm fit snugly inside the 8mm and soldered up great. Cut with a wheeled cutter it was a no go.

 

[PriestyUK]

My heating system is 6mm microbore with manifolds. When updating my rads, and renewing 15mm out of the floors up stairs as most of the 6mm coming out of the floor to the rads had been kinked by hoovering etc. I was more worried about applying too much solder and blocking the pipe, but it all went ok. They thought back then, the smaller the pipe less water to heat up I think. My HTG system does run on 100% inhibitor and magnaclean 😀