The Usage and Precautions of Water Sandpaper

Ⅰ. How to use water sandpaper?

Many items in our daily life need to be finely polished before they can be shaped, such as leather, wood, and metal. Water sandpaper is often used for polishing these items. There are two main ways to use water sandpaper:

1. Directly use in water

When grinding small items, you can directly put them in water and pour water while grinding. This way, the items can be cleaned every time you grind them, and the work efficiency is relatively fast.

2. Slowly add water

When grinding larger items, especially furniture that is not convenient to be put in water, coarse-sand the items first, and then use sandpaper dipped in water for fine grinding. As the water runs out, slowly add water for further grinding.

Ⅱ. Precautions for using water sandpaper 

The waterproof sandpaper needs to be used with water, not dry. If it is dry, the debris of the grinding object will adhere to the gaps between the sand particles of the sandpaper, causing the friction force and grinding force of the sandpaper to weaken. This will not only affect the polishing effect but also make the sandpaper more easily damaged.

Waterproof sandpaper has different types. When grinding, start with the smaller type and gradually increase to the larger type for polishing. Be patient while grinding as you need to grind the same location dozens of times, and you need to change the type of sandpaper each time you finish grinding that location. Make sure you clean the place where you have just polished with clean water before changing the sandpaper.

Ⅲ. Proper techniques for using water sandpaper

When using water sandpaper, in addition to paying attention to the correct methods, you also need to pay attention to the following techniques:

(1) Wear gloves and hold the sandpaper by hand. Keep it close to the object's surface, and polish it in one direction. If you are polishing a wooden product, you also need to polish along the direction of the wood grain.

(2) When using abrasive paper silicon carbide, do not stay in one place for too long to avoid excessive grinding. If the polishing effect is not good, you can consider replacing it with a different type of sandpaper.

(3) When using water sandpaper to polish, focus on polishing the head a few times to make it flat, so that the subsequent fine polishing can have better results. Therefore, the correct technique is particularly important for the first few rounds of polishing.