Removing Floor Tile Grout

I need to re-grout a bathroom ceramic tile floor with badly discolored grout. The grout line width is 1/4 inch. What is the easiest (and best) way to remove at least 1/16 - 1/8 depth of the old grout? Is there a power tool that won't damage the tile?
Thanks, in advance, for your help!
Rob Houston
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power
Never tried it, but Dremel makes a bit just for that. Ed
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power
Grout isn't really that hard. You should be able to rake it out with the proper hand tool. They make one for this specific purpose. A power tool will make a lot of dust.
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Look at the Fein Multimaster. They have carbide and diamond blades specifically for grout removal.
Boden
Rob Houston wrote:

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