The paper cutter should be avoided in wet or dusty environments, and a small amount of lubricating oil should be added to the moving parts every month. If the use is suspended, the upper and lower blades should be coated with a small amount of anti-rust oil to prevent rust.
The new blade equipped with the A4 paper cutter needs to be used after it has been sharpened. Sometimes the new knife that has just been sharpened will have a phenomenon of incision pulling when cutting. Many people think that it is a knife flower. In fact, this is a cognitive phenomenon. Misunderstanding, because this kind of pull flower phenomenon will disappear naturally with the increase of cutting amount. It is observed through magnification that this is caused by the adhesion of steel chips after grinding to the blade, which is usually called a burr. The burr will automatically fall off with the continuous movement and friction of the blade, which is essentially different from the blade. Therefore, after the grinding is completed, in order to make the cutting edge sharper and smoother, the cutting blade should be sharpened with a whetstone after sharpening, and then a bamboo piece (wood block or plastic can also be used) to keep the blade along the cutting edge. The granular burrs on the blade are scraped off, and at the same time, oil (anti-rust) is applied to the blade to prolong the service life of the blade and make the cut edge smoother. If it is found in the cutting work that there is a blade pulling the paper on some cutting surfaces, it should be polished with a whetstone at any time.
On the one hand, the quality of the blade and whether its use is reasonable directly affect the cutting quality. On the other hand, the unreasonable sharpening angle and use will seriously damage the accuracy and life of the paper cutter. It seems to be a detail issue, but if it is improperly handled, it will have a profound impact on the quality and production efficiency of printed products, and must be highly valued and paid attention to.
