1, hand-drawn method. Suitable for many places. Before painting, put the bristles in a paint bucket, dip them in half of the paint and pat them gently, so that the paint will not drip and sag. 2. Roll coating method. It is suitable for walls and ceilings. The drum saves time than the brush, but the brush marks will be uneven according to the surface and roughness of the drum. 3. Spray painting method. Suitable for places with large space and furniture and articles in the room, which can be covered with things to avoid being stained by floating paint.

/Related knowledge science:

1, scraping white is scraping the wall with large white powder for building on the rough surface of cement. The specific steps are to deal with the original white at the grass-roots level first. If there is a gap, it should be filled with gypsum and the wall should be painted and fixed. After that, the roof of the house should be covered with plaster and then blown white.

2. During construction, the spray gun should move vertically parallel to the wall, and try to keep the same swing speed to prevent uneven problems. The advantages are smooth paint film surface, good texture, and time and labor saving. The disadvantage is that the dead corner is not easy to paint, and it is easy to produce collision marks.

3. Choose the appropriate roller size and avoid using oily paint, so it is not difficult to roll coating. When painting, it is drawn in the form of broken lines, and scrolling up and down can draw more evenly. The advantage is that it has a sense of craftsmanship and is very suitable for DIY. Disadvantages are obvious brush marks, thick paint film and easy consumption.