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I just completed a 600 sqft installation of 18X18 Saturnia (light cross-cut travertine, unpolished) stone over a concrete slab surface. The slab was fairly level and the installation looks great. There are howvever several areas where lippage was unavoidable and spot honing will greatly improve the job’s appearance. Does anyone have any experience with honing marble flooring? I used a 220 grit sandpaper to dress the lippage, but the problem I’ve got is that the 220 grit on my Flex is actually polishing the Saturnia to a finish that is brighter than the honed surface of the original stone. Is my grit or RPM (3200) too high for this application? I think I can fix the shine over the parts I lightly sanded with a mild acid wash before I seal the stone. Any suggestions on technique?
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Frank, 3,200 RPM is definitely not too high. Have you tried changing to a courser grit? Try 80-120 to get the look you want.
*frank the acid etch is hard to do unless you do the whole floor. It's easier to polish up to match the exsisting floor. Start rough and move up. I don't know of a stock answer that will make your job go faster
*Thanks guys, I'll try a lower grit by hand and see what sort of results I get. As an aside, I had two marble showers to refinish. The first shower I brought up to a high gloss with 500 to 1000 grit at 10,000 RPM. Looked good, then hit it with bolling alley paste for the final finish. Total time on 120 sqft - 2 days! The second shower I used a commerciallly available chemical poultice at 350 RPM. Looks like damn glass! Total time - 30 seconds per square foot! I've been living in the dark ages!