[CaptScottNC]

Borrowed a dremel with a cord and ground out pits and cracks for about 2 hours today. I have a feeling the cordless one would have given out well before I was done. My back finally told me it was time to stop. I ground out about 75 little pits where there were voids in the glass on the floor and some on the deck. Definitely going to be buying a grinding tool with a cord.

Thanks for the input guys.