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You may want to recommend to your customer that having the edges rounded would help prevent further chipping. The edge can be rounded using a course diamond abrasive on a small electric hand machine. You can also put a profile on the edge using a... Read More

It all depends on several factors. Generally, granite will take much longer to grind, hone and polish then softer materials like marble. As a rule of thumb you can plan on spending about one minute per square foot per grit. If your using a system... Read More

Of course you can use an oscillating sander but an oscillating sander tends to leave a stray scratch pattern that can be difficult to remove. I have found the best method is to use a rotary polisher for best results. TIP If the top is large enough... Read More

There are now available many course abrasives that can grind a marble floor flat in a hurry. These abrasives are called lippage plates. They work exceptionally well. Be sure to test in small area before grinding the entire floor. Some of these plates... Read More

There are several reasons you may be getting stray scratching check the following: Do the grout joints contain sanded grout? If the grout joint is wider than 1/4 inch, the chances are you have sanded grout. If you do, then the grout is becoming... Read More

This is a common problem with many of the marble polishing powders because they all contain oxalic acid. Acids of course will etch marble. To prevent etching you need to wet the areas you are not working on with water and the addition of either a... Read More

Q. I bought an onyx marble pen and pencil set that had an engraving plaque on it. I removed it and of course dulled the shine when trying to clean the glue off. Any way to restore this to new? It is an old Scheaffer marble desk set. The slab is about... Read More

Q. My unfilled, but sealed (with a lithofin product) travertine needs a good clean before resealing. What is the best technique for this? There is dirt in the holes, which is obviously worse in heavy wear areas. Thanks A. The best way to clean... Read More

Q. What is the best cleaner to use on limestone floors? The floors in my bathroom are starting to look very dirty, with grayish marks and spots all over. A. It sounds like your floors have been etched -- probably by using an acid based cleaner. Many... Read More

Stone Myths By Frederick M. Hueston www.stoneforensics.com Over the past 20years I have heard many stories about the reasons stone will fail, turn color, fade or what ever. Many of these stories are funny and almost all of them are just plain... Read More