How to use sandpaper What is the use method of sandpaper?

1, sandpaper material is different. Each material is suitable for a special type of grinding. Your choice is: garnet. Garnet is a natural abrasive used to polish any bare wood. Garnet is universal, but it will be faster than other sandpaper. Silicon carbide. Silicon carbide is best used to polish seams and remove dust, trapping your wood paint in spots. Alumina. Alumina can be used to make wood, metal and paint into powder. This is more than silicon carbide, but it has a longer life.

2. divide your sandpaper into three different grades. There are three grades of sandpaper: coarse, medium and fine. The grade of sandpaper is measured by sandpaper. The higher the roughness of sandpaper, the higher the smoothness of sandpaper surface. Check the package, and sandpaper comes in to see what its gravel is. Buy boards of each grade for your project. Coarse sandpaper has a particle size of 40 to 80. Eighty pieces of sandpaper should be rough enough, unless your surface has obvious defects, you will be polished. The particle size of sandpaper ranges from 100 to 150. The particle size of fine sandpaper is 180 to 220. Sandpaper should be fine enough, but if you want to finish it smoothly, there are higher abrasive particles.

3. Durability of open coating or strength of closed coating. Sealing sandpaper completely covers particles, which means it is a stronger abrasive. There are fewer particles on the open sandpaper, so the effect is not very good, but the extra space on the paper prevents accumulation, so it is more durable. Sand the hard surface with closed sandpaper, and spread sandpaper on the soft surface.

4. Better and faster results with sand. A sand block is a piece of sandpaper that you attach. A polished brick can be anything-a piece of foam, a piece of wood or a piece of cork. Surround your sandpaper block with sandpaper, with the sandpaper facing outward and fixed with nails or glue. If you don't want to do it yourself, you can also buy a frosted block at the local hardware store.

5. Remove obvious defects from the lowest sandpaper. This will be the rough sandpaper you bought. Do not use sandpaper with very low particle size on the surface unless necessary. For example, you don't need to use 40 grit (very rough) sandpaper to leave tiny defects on the surface. In this case, you'd better start with No.80 sandpaper. Use rough sandpaper on large ditches and raised surfaces.

6. Put sandpaper on the surface to be polished. Press sandpaper on sandpaper or sand the block with sandpaper. If you stand up, press your weight on your hand with sandpaper. Apply pressure with both hands.

7. Sandpaper the surface. If you are grinding wood, you must use sandpaper, not sandpaper. The texture of wood is expressed by its lines and patterns. For example, if you are sanding the surface of a wooden table and the texture is from the front to the back of the table, you will want to move sandpaper from the front to the back of the table, and vice versa. Or conversely, if you grind sandpaper from the desk to the back of the desk, you have to move sandpaper from the front of the desk to the back, and vice versa.

8. Move the sandpaper back and forth in a straight line. Keep pressing the sandpaper with sandpaper, and don't lift the sandpaper unless you need a rest. Gradually pass through the whole surface you are polishing. You should start to see the accumulated dust. Don't forget to polish the edges. When you reach the edge of the surface, you are polishing. Stop and spend some time polishing the edges and corners.

9. Absorb dust after vacuuming. Don't worry, if you still see scratches or defects on the surface, you sand them. Then you have to smooth them with your fine sandpaper.

10, move your mid-range sandpaper. If you use sandpaper, please stick it on your sand block. Repeat steps 4 to 6. Ensure that all machined surfaces are polished, including edges.

1 1, and polish with the best sandpaper. Your surface should be smooth and free from scratches and bells. Start using coarse sandpaper, if you still see scratches or you are not satisfied with the smoothness.