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Jan 26, 2022/Stone Care Guides

The Best Tips for Grinding and Polishing Stones and Countertops

grinding countertop

Stones are intricate compositions of countertops. A good countertop undergoes suitable grinding and polishing using a good stone grinder. This process can be useful in various do-it-yourself projects, especially with home improvements.

With the manual planetary polisher Hyper Grinder Variable Speed Countertop Polisher, you will have the best results in grinding and polishing stones and countertops. Its strong motor and counter-rotating planetary can grind and polish marble, granite, and concrete. Its durability and flawless balance set it apart from other machines on the market. The abrasive speed is examined to stabilize the device and make grinding and polishing activities easier. It comes with splash protection as well as a vacuum cleaner connector.

This machine may be converted into a floor machine by adding accessories for grinding and polishing steps, marble, stones, and concrete, as well as for sanding hardwood floors and applying an antique finish to marbles and gravel. A lightweight handle with an 8-liter water tank is available for purchase separately. Jaguar Flex Resin Pads are recommended but not required.

If you are a beginner and trying to find the most straightforward tips for starting your grinding and polishing tasks for different types of stones and countertops, here is everything you need to get going.

Learning the Basics

You strive for a smooth finish with grinding by smoothing out rough areas or sharp edges. While polishing, your purpose is to create a narrow point or a sharp edge, not the other way around.

A general rule before beginning to grind and polish is to clean. Cleaning stones and countertops beforehand display accurate imagery of the scratches, specifically how serious they are. You can see how deep the polishing should be and determine what procedures would work best.

Wet and Dry 

Wet or dry grinding, honing, and polishing are all possible. Diamond tooling made for wet use, on the other hand, can practically never be used dry, but specific dry tooling can.

A variable-speed polisher is not required for wet processing, but it does provide you with more control. Dry processing necessitates using a variable-speed polisher since tooling speed affects the cutting rate, pad temperature, and finish quality. Furthermore, dust extraction should always be used when dry polishing, with equipment suited to manage fine concrete dust. Crystalline silica dust is extremely harmful to one's health.

Wet processing is faster, produces superior results at all grit levels, and produces no dust. Dry processing has the advantage of not generating a lot of wet mess; thus, it may be done inside a house with powerful dust collection. Dry polishing also produces a higher amount of gloss.

Do Not Skip the Grits

One of the most basic rules is not to skip the grits, regardless of the appearance you want or whether you complete one or more stages. The purpose of each grit in the series is to smooth away scratches from the preceding one. No matter how long you grind, a 3,000-grit pad will not be able to smooth out scratches from a 200-grit place. 

Work your way through the grits, starting with the coarsest and ending with the finest. Do not be tempted to cut corners by missing a grit to save a few minutes. To eliminate the scratches caused by previous grit, you must go through finer and finer grits. With each grit size, the idea is for the scratches to get finer and finer until they are no longer visible. Skipping a grit results in significant scratches in the final polish.

Take Your Time and Be Observant

To secure the results you want, you must be patient. You have to go through every single detail and not miss anything. Remember, your aim is for a polished look for your stones and countertops.

Using the Right Tool

The Hyper Grinder Variable Speed Countertop Polisher is a grinding and polishing machine that you can utilize! Now that you know the best tips for your home improvement, you may start planning and consider this tool for your home project. These are the machine specs:

  • Watt: 750
  • Volt: 110/220
  • Hertz: 50/60
  • Working Width: 290mm or 330mm
  • Tool Size: 3) 100mm or 3) x 140mm Water Tank: 2 lt
  • Offered with 290 variable speed.

Polishing Marble Countertops

Polishing marble countertops is a specialized process that requires professional skill and precision to achieve superior results.

Preparing the Surface

Before polishing, ensure that the marble surface is thoroughly cleaned. Remove any dust, debris, and stains. Cleaning the surface will prevent any particles from scratching the marble during the polishing process. For stains that are tough to remove, consider using a poultice or professional-grade cleaner specifically designed for marble.

Choosing the Right Polishing Compound

The choice of polishing powder is critical in achieving a flawless finish without damaging the delicate surface of marble. Here are two highly recommended products:

MB ZERO+ Marble Polishing Powder

MB ZERO+ is tailored for all calcite-based stones and is ideal for sensitive or hard-to-polish marbles like white, black, brown marbles, and serpentines. It’s formulated to produce a high gloss finish with superior clarity and shine, offering less aggressiveness compared to traditional powders.

Apply a small amount of the powder to the marble surface. Using a professional buffer or polisher, work the powder into the stone using a medium to high speed. The unique formulation allows for a high gloss finish without the use of oxalic acid, making it safer for sensitive stones.

MB-12 Caliber Marble Polishing Powder

MB-12 is designed for professional use and is effective on a wide range of calcite-based stones, including marble, limestone, travertine, and more. It is particularly effective in achieving a very high gloss finish, often surpassing factory gloss on new installations. Additionally, MB-12 can serve as a cleaning agent and can remove coatings or sealers from granite surfaces.

MB-12 should be applied wet and transitioned to dry during the polishing process. Distribute the powder evenly over the work area, and using a dampened polishing pad, gradually increase the speed of the buffer until the desired gloss is achieved.

Polishing Technique

Start polishing with a low-speed setting and gradually increase the speed as the powder begins to dry. This method helps in maximizing the gloss and ensures an even finish. It is crucial to keep the surface slightly wet during the initial stages of polishing to minimize the dust and reduce the risk of scratching the marble.

Final Buffing and Cleaning

Once the desired gloss level is achieved, clean the surface thoroughly to remove any residual polishing compound. Use a soft, clean microfiber cloth to buff the surface gently. This step is vital to ensure that no polishing residue remains on the countertop, which could affect the clarity and shine of the finish.

Sealing the Countertop

After polishing, it’s advisable to seal the marble countertop to protect it from stains and etching. Use a high-quality sealer designed for marble and apply according to the manufacturer's instructions. This will help maintain the gloss and protect the surface from everyday wear and tear.


Regular maintenance is key to preserving the polished finish of marble countertops. Use pH-neutral cleaners for daily cleaning and avoid using abrasive pads that can scratch the surface.

Polishing Granite Countertops

Polishing granite countertops in a professional setting involves specific techniques and products to enhance the natural beauty and durability of the granite surface

Preparation of Granite Surface

Before initiating the polishing process, ensure that the granite surface is completely clean and free from debris. Any particles or residues can affect the polishing process, leading to scratches. Granite, being a harder stone than marble, requires thorough preparation to achieve the best results.

Selecting the Right Polishing Products

Professional polishing of granite countertops can achieve exceptional results using the following recommended products:

MB-20® Granite Polish

MB-20® is a sophisticated blend of abrasives and polishing agents specifically designed for polishing granite and similar stones such as mercantile granite and serpentines. It is particularly effective on darker granites and can be tinted to match the surface color, ensuring seamless polish application.

For best results, tint the MB-20® Granite Polish to match the countertop color, especially for darker stones. Apply the polish using recommended pads like Hogs Hair Pad or White Polishing Pad, and polish the surface using a medium to high-speed buffer until achieving the desired gloss.

Kristal Blu Granite Polishing Cream

Kristal Blu is tailored for granite surfaces and helps in maintaining brightness while improving resistance to high traffic areas. It also prevents micro-abrasion and opacification, making it ideal for commercial and heavily used surfaces.

Apply Kristal Blu Granite Polishing Cream periodically to clean and dry granite surfaces. Use a soft polishing pad and buff the surface in circular motions until the desired shine is restored. This product is excellent for routine maintenance and deep shine enhancement.

Polishing Technique

Unlike marble, granite's hardness requires more robust polishing techniques. Start with a lower speed to spread the polish evenly and then increase the speed to work the polish into the granite. This ensures deep penetration and a high-quality finish. Granite can withstand higher pressures during polishing, which helps in achieving a mirror-like shine.

Cleaning and Sealing

Granite, due to its less porous nature compared to marble, generally requires less aggressive cleaning before polishing. However, ensuring the removal of all residues is crucial for a perfect polish.

Granite also benefits from sealing post-polishing, though it may not require it as frequently as marble. The sealer helps in protecting the stone from stains and spills, especially in high-use areas.


After achieving the desired gloss, remove any excess polish with a clean, soft cloth. Seal the granite using a high-quality sealer designed for granite to enhance its stain resistance. Regular maintenance should include cleaning with pH-neutral products and periodic re-polishing with Kristal Blu to maintain gloss and protect the surface from wear.

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