Kitchens – How to properly cut pre-existing kitchen backsplash tile for new low voltage wall plates

audiokitchenstile

I'm doing a little bit of kitchen remodeling, overflow from my home theater remodeling. I'm adding some RCA input ports to a pre-existing low voltage wall plate that previously hosted just Cat5 and RG6. Problem is, when this plate was first installed (before I was here), enough room was made only for the cat5 and RG6 aligned vertically.

Low voltage wall plate cutout:
enter image description here

Current Wallplate:
enter image description here

As you can see from the picture, I rather foolishly thought I could just chisel the tile along the edges and break more off.

My question is somewhat twofold I suppose:

How do I properly cut the pre-existing backsplash tile, and how do I fix the damage I've already caused?

Best Answer

What would probably work best for cutting tile that has already been placed would be a quality oscillating tool with a diamond blade.

Diamond Blade

http://www.lowes.com/pd_349423-353-OSC312DG_0__?productId=3380378

enter image description here

You probably wouldn't want to use a carbide blade for tile or grout as it will get chewed up and damaged very quickly.

NOTE: Unless you are purposely trying to destroy an entire piece, it is never a good idea to chisel any type of glass or ceramic as you have already found out.

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