cutting into an internal corner

[self builder 123]

Hi

Can anyone advise how to cut into an exterior internal corner through pebbledash and into the concrete blocks underneath.

I need to cut 2 chases going into the corner where each runs at 45 degrees up the wall.

I want to avoid having to use a hammer and chisel to get right into the corner.

Any ideas / suggestions ?

 

[noseall]

//www.diynot.com/forums/viewtopic.php?p=1353298#1353298

 

[self builder 123]

cheers noseall !