How Can Velcro Sandpaper Sand The Wall Without Dust?

1. Choose dry abrasive sandpaper.

2. If the sandpaper is too thick, it will easily cause scratches. If the dry sandpaper disc is too fine, it will be difficult to sand it smoothly. Therefore, the choice of wall sandpaper is not as thick as possible, nor as fine as possible, but to match the wall putty. It is appropriate.

3. In actual operation, first of all, the goal should be to achieve good flatness. Use 240 and 320# for wall polishing and try it first. If the polishing is not very difficult and the flatness can be done well, then continue.

4. If you feel that sanding is very difficult, then use the coarse Gold Velcro and PSA Abrasive Sanding Disc with a low mesh number and try sanding again. On the premise of ensuring the flatness of the wall, if coarse sandpaper is used once, generally the whole or part needs to be polished again with fine sandpaper to eliminate the scratches left by the coarse sandpaper and make the wall more detailed.

5. According to the quality of putty. Due to the loose surface structure of non-water-resistant putty, it is easier to sand. Generally, 240#, 320#, or higher velcro abrasive sandpaper is used for sanding. However, because most of the non-water-resistant putty is of poor quality, the mesh number of the powder itself is generally low. , so even if it is polished with high-purpose sandpaper, it is difficult to create a very detailed feeling.

6. The surface structure of water-resistant putty is relatively firm, and it takes a lot of effort to polish than non-water-resistant putty. Especially for some high-strength water-resistant putty, it will be very difficult to polish after the putty is completely dry. At this time, you need to use coarse sandpaper. Make the flatness well, and then sand it twice with fine sandpaper for better results.