1. Explain that the grindstone is a double-sided grindstone (one side is thick and the other side is thin). Hold the planer with both hands and press down. Grind the plane to a 40-degree cross section with the rough surface on the reverse side of the grindstone, and pull it back and forth in parallel (the plane and the grindstone form 30 degrees).
2, rough grinding first, after grinding, in a place with strong light, until you see a little cutting edge on the blade, and then use a fine grinding stone mill. If you look closely, you will know that there is no sand hole in the blade.
3, or there are several scratches on the hand, if it feels like Mao Mao, it means success; If it feels slippery, you must grind it again. Then turn off the lights slowly with the reverse side. When polishing, be sure to use even force, and then polish it twice with water.
4, avoid by all means: do not use power tools to polish, otherwise the plane is easy to fade, and the faded steel is scrap iron. It is best to polish the planer with a special tool.
Extended data
origin
It's different.
1 was introduced into China from Rome in the Ming Dynasty, which made important contributions to the development of Ming-style furniture. A tool used before the plane appeared was called scraping. There is no evidence that there were planes in China before the Ming Dynasty, and there was only scraping at that time. Scraping can only handle cork, but it will jump when handling hardwood.
The planer was invented in16th century. The planer used in China is pushed outward, while the planer used in other countries is pulled inward. Planes existed in Rome, but they didn't reach China.
2. It is considered that it was introduced to China from Rome in the Ming Dynasty, and it has reference value only on the basis of insufficient statements;
In China, wood is widely used in household appliances and buildings, and its technology is also the most exquisite. Wood is extremely difficult to survive in the world, but as far as the technology of Han and Tang dynasties (including excavation) is concerned, it is proved that planing tools are used.
References:
Baidu encyclopedia-airplane