chopping into brick

[sime27]

can anyone reckommend the best way of chopping back boxes into brick work.
i've currently got a contract rewiring kitchens with 10 outlets plus cooker circuit.
i'm finding myself taking most of the day chopping out in these old brick houses.
i currently use a sds 110v drill with a chisel bit
but im finding either the bricks fall apart on me making it hard to secure the box or the bricks or like bell metal.

 

[Adam_151]

Gang drill with depth stop around the outside, then use the chisel to break out the centre.

Or use surface mount stuff

And know exactly what you mean with regards to the bricks, put a curtain rail up for a relative in a terraced coucil house, either it was bloody slow drilling into the brick even with an SDS, and on another bracket it just all crumbled away when you tried to get a fixing in it

 

[RF Lighting]

Use a lump hammer and a scutch chisel with a new blade.

 

[JohnD]

If the bricks crumble, don't you just pack the boxes in with mortar, plus a long screw to hold them steady while it hardens?

 

[RF Lighting]

I've found one coat plaster works just as well for 'glueing' back boxes in. You can also patch the hole up at the same time with this.

 

[ebee]

Chain drill around the outside then use a combed scutch chisel .
I did try an experiment with "Pink Grip" - used a few spots to stick a single metal box to a concrete block outside in all weathers for 3 months, had to hit it with a lump hammer to get it off.

 

[RF Lighting]

It's b****y strong stuff is pink grip.
Smells nice too!