Backboxes - Sinker or Bolster?

[T5R+]

So who swears by the SDS backbox sinkers versus bolster chisel and hammer. Going into brick and not block.

You guessed it - have to cut out about 100 (sockets, light switches, TV, network, etc) and thought that I would invest in the modern approach, but a lot of people complain about the quality of the sinkers. Thus, if anybody has a good recommendation, please share.

[Simpo Two]

I think the sinkers are really designed for blocks - check what they say.



However, I can't think of a reason why you couldn't use a big core drill...

[roysum]

Best bet is a small SDS chisel (sds drill with rotary stop)

[MonkeyHanger]

Our usual method is Wall Chaser (2 disc Hilti job)for the vertical chases then use it horizontally for the top & bottom of the box. Finish off with an SDS/Chisel Bit combo and Bob's your Mother's Brother...

[T5R+]

Thanks the all the repliers folks.

MonkeyHanger said:

Our usual method is Wall Chaser ..........

Had thought of this but discounted it - but given your positive experience(s) will give it a go.

The chaser also means running/cutting channels for cable will be easier.

[allgonepetetong]

My Dad's a builder, he has just cut 20 odd holes for back boxes into brick using the SDS cutter at my house he is renovating.

He swears by it.

[allgonepetetong]

My Dad's a builder, he has just cut 20 odd holes for back boxes into brick using the SDS cutter at my house he is renovating.

He swears by it.

[T5R+]

So he cut 40 backboxes.................youme

Sorry, any idea what make of sinker he used - they seem to vary a lot in quality according to folk who have tried them.

[hairyben]

If the wall to be chased is nice and consistent, not too hard and not too soft, they can work well.

If concrete/hard bricks, or rubbishy old plaster, or a soft/hard bricks/mortar combo are involved, forget it.

I have one somewhere but mostly stich drill then use a 35mm SDS chisel, with a little practice you can cut perfect snug holes for the boxes and the plate covers the rough edges.

[roysum]

hairyben said:

If the wall to be chased is nice and consistent, not too hard and not too soft, they can work well.

If concrete/hard bricks, or rubbishy old plaster, or a soft/hard bricks/mortar combo are involved, forget it.

I have one somewhere but mostly stich drill then use a 35mm SDS chisel, with a little practice you can cut perfect snug holes for the boxes and the plate covers the rough edges.

+1