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cutting plaster wall

6410 Views 4 Replies 4 Participants Last post by  oscarMadison
I have what I think is plaster walls. Where the trim is removed it looks like concrete. In one spot where I can see the back of the wall I don't see slats, but what looks like some kind of drywall.

Is this plaster on drywall? If so how hard is it to cut a square hole in it? I figure drywall would okay, but not sure on the plaster. I'd like to extend a single receptacle box to a double so I can fit in a phone jack/cable plug. Currently, the cables come up through the floor. I'd like to do the same thing in the other bedroom, it's got an old style four prong jack.
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I actually have a hand saw, much like a drywall saw, for doing just this, enlarging electrical boxes. It has a "grit" type blade instead of teeth, made for cutting plaster with metal mesh backing actually, should work on your plaster/drywall combo. I got mine at Lowe's, I think it is their Kobalt brand, it has a blue handle anyway. I'm sure others have these also. Thanks, David
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