I have about 2000 sf of travertine to flatten and fill and hone. It is 800mm tiles and the lips not too bad but a few good ones, a new install. I'm thinking about a hand machine to flatten the seams so I done open it up too bad, seems like a waste of time to do so much area that doesn't need it, start my grinding with a floor machine at 120r. I did some areas with a 4" 50 turbocat then a 70 genesis electroated and it works good but would like it to go faster, maybe something to flatten one step and leave screeches a 120r can handle. Any ideas? I want to keep it all dry grinding for step 1, so it is an easy clean up before re filling (one of my objectives)

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