How to learn to sharpen a lathe?
Notice two things. One, the upper part of the knife is bigger than the lower part. It's called the posterior Angle of the Angle if it's about 5 degrees The Angle of the two steel is that there is a slot on the alloy. One thing to remember is that your cutting point must be the highest point. The corners must be sharpened to allow him to make the cutting points. But the front and back angles can't be grinned to affect the life of the knife You understand?
A good skilled car worker, sharpening knife is half. This is not done overnight. Don't worry, practice the knife carefully, watch how the other person sharpens the knife. In combination with book knowledge, you can buy a mechanical worker cutting manual (mechanical worker's publisher). There is a detailed introduction to this in chapter 5 "knives". Every time you sharpen the knife, try to cut it and gradually gain experience. Hope to help you.
The Angle is lower than the upper part of the Angle, and also the slot, which is the opposite of the big one
I suggest that you sharpen the tool under the guidance of your teacher so that it is intuitive, easy to understand, easy to communicate and secure. Is there any quick fix? No. Craftsmanship is all about practice. Let me tell you something about my personal experience. First, learn the Angle knowledge of the knife first, this way in the heart of the mill has an outline. The vibration and the smoothness of the wheel are needed before the grinder, and the grinding wheel should be trimmed if the grinding wheel is large and the grinding wheel is uneven. There are two types of grinding wheel, the greening silicon grinding wheel is made of hard alloy, the alumina grinding wheel is the sharpener, which is to be distinguished. When grinding the knife, wear a protective eye, stand on the side of the wheel, not on the wheel. Hold the knife in your hands, start with light touch, then slowly add force, don't overshoot and overexert, avoid injury. Six, cutting tool slot, with orthogonal first knife surface of grinding wheel to open a small groove, groove keep a certain distance with the blade, use this guide trough deepened, slowly slowly grinding to blade, narrowing and sharp edge.
