1. Pay attention to the size of the ground cut

The size of the ground cut and whether there are holes on the stone surface. If there is a cut, pay more attention when refurbishing. Blindly use a steel grinding block to flatten the stone and appear under the flat ballast. Surface holes should also be glued. Go to the special glue to make up, otherwise the glue pollution will be irreversible, diamond soft grinding disc

2. Is the stone protected?

Whether the stone is protected and whether the joints are sealed is very important. The new water consumption is relatively large. If it penetrates into the stone or the joints, there will be water spots when the lighter is used for a period of time. In severe cases, there will be water spots pollution (the water spots are not dry), and the stone will turn yellow and black.

3. Pay attention to the size of the stone crystal

Pay attention to the size of the stone crystal (composition). A stone with too large crystals changes on the stone due to its hardness. The brightness and flatness after polishing will be affected, such as water ripples (fish scale patterns).

4. Pay attention to the composition of the foundation stone

The composition of the entire foundation stone is composed of a variety of stones or stones of different conditions. For example, granite plus marble plus singeing plus metal belt, or black stone plus light-colored stone, etc., some parts are difficult to achieve uniform brightness and color after renovation; some parts, such as singeing and polished stones, cannot be placed on the four sides of the cross. Refurbish at a right angle, which will attract attention. Unlike stone, metal band is thin and tough. Pay attention to the safety and cost of diamond emery cloth machines and abrasives themselves. Also pay attention to the changes in the metal belt after refurbishment. For example, stainless steel belts will become black and shiny under low-water and high-speed grinding.

5. Pay attention to the flatness of the ground

It is worth mentioning that there is also the issue of the flatness of the entire ground. The stone is ground on a machine in the processing plant, and the smooth surface is almost horizontal. Refurbishment is to grind the machine on the stone. The higher the luminosity after renovation, the linear reflection is obviously not straight. The skill of the workers is related to the state of the equipment, but there can be no big ups and downs.Diamond abrasive belt, 

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