I am currently cutting a channel in a concrete floor for drains as part of a bathroom renovation.

My problem is the cuts close to the walls - rather than jack hammer these and risk cracking brickwork/foundations I'd like to cut this as well but can't get close enough (ideally to within about 1cm or less of the walls) with the concrete saw.

Can I use an angle grinder with a large disc (what size disc??) with a concrete cutting disc? I am concerned about using a large disc angle grinder as these can be dangerous - are there any other options for making cuts to a concrete floor (about 6" deep) parallel to, and about 1cm from, walls?

Any suggestions would be appreciated.


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