In the current decoration operation, it is often difficult to drill due to interference from door and window frames when drilling. Most of the workers now For the extra long wood drill bit, then there is an extra long wood drill bit . So how do we need to polish the extra long wood drill bit?
First, check whether the drill bit is bent and whether the cutting edge is intact, and then hold the middle and front part of the drill bit with one hand. This hand is regarded as the 0 points and is close to the position above the middle of the grinding wheel of the grinder. Hold the tail of the drill bit with the other hand and move it up and down. Sharpen both sides of the drill. Note that the two blades are the same length and can be measured with a ruler. Also, note that the angle between the centerline of the drill bit and the knife edge is about 45 degrees. On another special grooved grinder, the transverse cutting edge perpendicular to the centerline of the drill bit was sharpened again. When drilling, the bit is stable, the resistance is small, the positioning contact surface is small, and the hole is round, and the perfect bit is ground.
No matter what kind of grinding, you need to pay attention to the method and method, and the same is true for the grinding of TCT circular saw blades .www.jeejatools.com