How To Polish Marble Wall?

Grinding process

1. Rough grinding

It is recommended to use 50#, 100#, 200#, 400# marble grinding disc for rough grinding. Avoid soft water abrasive discs as they create waves and affect the flatness of the surface. 

Proper water absorption after grinding: After each grinding block is used, please make sure it is fully absorbent. This helps prevent any residue or debris from previous grinding steps from affecting the subsequent grinding process. Wipe off excess water before proceeding to the next grinding block. 

Use a 50# grinding block to check whether there is a deep groove: Use a 50# grinding block to check whether there is a deep groove left by the abrasive in the previous step. This step ensures a flat surface and smooths out any protruding marks before proceeding to the next block. 

Use a grinder in good shape: Make sure the grinder is in good condition and in good shape. This helps achieve consistent and accurate grinding results. 

Allocate 45% of the total grinding time to rough grinding: Coarse grinding should account for about 45% of the total grinding time. This distribution emphasizes the importance of achieving the desired flatness and quality during the coarse grinding stage. 

By following these steps and recommendations, you can ensure that the kibbling process works effectively. This contributes significantly to the quality acceptance of project completion by providing a flat and well-prepared surface for subsequent grinding and finishing steps.

2. Fine grinding

Start with 800# marble polishing discs: Install the 800# marble polish pad to the grinder. This disc will help to further refine the surface and remove scratches or imperfections from previous grinding steps. 

Allocate 35% of the total grinding time to fine grinding: Determine the total grinding time required for the project and allocate approximately 35% of the time to fine grinding. This ensures that sufficient time is dedicated at this stage to achieving a smooth and polished surface. 

Monitor for the appearance of first light: when fine-grinding with an 800# disc, pay attention to the surface.  "First light" refers to the first signs of a glossy, reflective appearance on a surface. This indicates that grinding is taking place effectively. 

Transition to 1500# diamond resin soft water grinding disc: Once the first light appears, switch to 1500# disc to continue the fine grinding process. This disc has a finer grain size to further refine the surface and enhance its smoothness and shine. 

Use 3000# wet diamond polishing pads to continue fine grinding: After finishing grinding with 1500# grinding disc, transfer to 3000# grinding disc for the final stage of fine grinding. This disc has a finer grain size which helps achieve a higher level of surface finish and gloss. 

Follow the steps below and use the specified diamond resin soft water lapping discs for effective fine lapping and smooth, polished surfaces.

Grinding Tips

1. Transverse polishing

One of the key methods employed in the polishing process is lateral polishing. By following a specific pattern, professionals can ensure an even, smooth grind across the entire surface of the material. To start the cross-polishing process, a hand polisher must be used and held firmly. Moving horizontally along a straight line, professionals should follow the pattern of "Left→Right→Left" or "Right→Left→Right". This movement should be repeated back and forth three times to achieve a consistent effect. Once the initial part is done, it's time to move on.

The next step involves moving the hand dropper up or down, and carefully positioning it 1/3 width below or above the previously polished area. By doing this, professionals can ensure that each part receives equal attention and prevent any unevenness in the end result. Once the hand launcher is correctly positioned, it must maintain the same movement pattern - "left→right→left" or "right→left→right". This uniform motion should be repeated three times back and forth along the newly added section. Through this meticulous repetition, each area of the board is sanded systematically and evenly. The process continues in this manner, with the professional alternating between polishing horizontally and moving the plate up and down, always pressing down 1/3 of the width of the previous grind before repeating the specified pattern.

2. Longitudinal polishing

In the same way, refer to the above method, do the same back and forth 3 times, and alternate 1/3 of the area, and use a hand polisher to polish the entire plate longitudinally.

3. Leave a side of 1~2cm

When sanding walls or countertops, it is important to leave a side allowance of 1 to 2 cm. This allows subsequent grinding to be done gradually and avoids grinding too close to the edge in one pass. Careful grinding in this manner helps to resolve scratches and is critical to achieving the desired flatness and luminosity of the surface. By allowing side margins, space is provided for subsequent grinding discs to gradually move toward the edge. This approach ensures better control of the grinding process and reduces the risk of accidentally grinding beyond the desired boundaries, which could otherwise result in damage and scratches. In addition to avoiding scratches, careful sanding plays an important role in determining the final flatness of a wall or countertop. Each abrasive disc contributes to the overall flatness, and by advancing little by little, a smoother, more even surface can be achieved. This is great for creating the desired aesthetic of the finished product. In addition, the luminous effect of a wall or countertop is also affected by the flatness of the surface. Leaving out the side edges allows for a consistent, even reflection of light, which enhances the overall look of the space.

In conclusion, a 1 to 2-cm wide margin when polishing marble walls is essential for best results. Careful sanding will help resolve scratches and ensure better control of the process. This is also a key factor in obtaining ideal surface flatness and luminous effects. By following this approach, you can achieve the perfect finish and create a visually pleasing environment.