How to mend the wrong hole in the wall?

Prepare the hole-filling paste first, then stir it evenly, and put the hole-filling paste into the wall hole to fill it up. Wait a while after you finish, and polish it with sandpaper. If the hole in the wall is particularly large, it should be repaired with putty, that is, the hole in the wall should be filled with putty and polished when it is dry. Related knowledge: 1. In order to make the finished wall particularly flat and beautiful, before decorating the wall, punch the hole of the water heater first, and then punch other holes. If you dig holes after the wall decoration, the aesthetic feeling on the wall will be greatly reduced. 2. When drilling holes in the wall, it is necessary to pull and insert to speed up, and there will be no dry powder and sticking. When digging a hole in the wall, the drill must be operated smoothly without shaking. If the drill bit wobbles, the friction between the drill bits will be greater. When you make a hole, you can't hit it all at once. When you press down again, you should control the strength. If it is not easy to hit, or when the speed is slow, you can pull out the drill bit and see if there are any items in the drill bit that affect its normal use. 4. If there is no water source and water pipe, you can add water to the drill bit before turning. Just add a little water, and the dust will stick. However, if you want to make the friction of the drill bit stronger, dry drilling will be more difficult than diamond drilling.