1, sand is different:
Water mill sandpaper: The gap between sand grains of water mill sandpaper is relatively small, and the ground powder is relatively small.
Dry frosted paper: Dry frosted paper has a large gap between sand particles and large ground powder.
2. Different roles
Water mill sandpaper: mainly used for grinding and polishing automobiles, furniture, leather, household appliance shells and mechanical parts.
Dry frosted paper: suitable for rough grinding of furniture, decoration and mechanical parts.
3. Use different methods
Water mill sandpaper: the ground powder is relatively small, so water should be used. When water is used, debris will flow out with the water. If you dry grind with water sandpaper, debris will remain in the gaps between the grains of sand.
Dry frosted paper: In the process of grinding, the powder will fall off because of the large gap, so it is not necessary to flush it with water.
Extended data:
Common misunderstandings in the use of sandpaper;
1, worn sandpaper is equivalent to higher sandpaper.
Old sandpaper means that the cutting efficiency is reduced and the heat generated is increased. If you think the grinding speed is too slow, change a new sandpaper or lower it.
The tighter you press on the sandpaper, the faster it will be polished.
Pressure will only increase the wear and heat of sandpaper, and even scorch wood. Generally speaking, grinding only needs light pressure, so that sandpaper and tools can be sold as coolies, which can easily prolong the life of sandpaper, and the speed is not slow at all.
3. Use sandpaper to label the end
Many novices only buy one size of sandpaper, which is inefficient.
Polishing is a long and boring process.
This feeling is generally because there is no obvious progress in the grinding process. This shows that the amount of sandpaper used is too high or too old and needs to be replaced.