Hello, Wan Wen walnut polishing method: 1, first say a magic method. 2. Soak walnuts for 4 hours, and brush them clean 1 hour. 3. Then pour the oil in the pot until the oil temperature is slightly higher. 4, immediately put the soaked walnuts in and cook for a while to remove the slag. 5. Note: Don't ask too much, otherwise it will turn black. 6. After the slight residue is boiled, take it out, wrap it in cloth and leave it for 3 days, and then use a plate of gloves to turn red immediately. The first problem you need to consider is crack prevention. Usually, large walnuts are easy to be knocked off, so when brushing walnuts, choose the area where the ground is the floor or carpet. The second is that the brush should not stay in a position of walnuts. Walnut is easy to crack when heated. 10 Brush one position for 8 times before brushing another position. You also need to pay attention to where to brush walnuts. The key position of brushing walnuts is the depth of the texture. The position that should not be brushed is the prominent part of walnut texture, especially to avoid brushing the edge of walnut.