What reason is aperture slant small when twist drill is drilling? If the drill hole is not round, it is probably because the bit edge belt has been seriously worn down. In this case, all you have to do is to change the drill bit or to polish the drill bit. What reason is the […]
Universal Tool Grinder
The motor could be rotated in 360°, increasing the grinding range. With variety of option attachments (such as 50B, 50C, 50D, 50E, 50K, 50H, 50S, etc.) could be provided for different purposes, grinding fast with high accuracy.