What aspects should be paid attention to in the use of woodworking planer?

1. Don't touch cement, stones and metal objects. 2. Control the feeding speed, which should be slow rather than fast. 3. Prevent the connector on the wood from popping up and hurting people. 4. Always sharpen the edge and keep it straight. 5. When loading the knives, keep the three knives in a circle. As long as one of them is higher than the circle, the back of the planed wood will sag for a while. 6. All screws should be tightened.