Why is the drill hole drilled out of the hole triangular?
Generally, the center grinding errors of the drill bits are different. The drill material with large drilling thickness is big bore, and the drill plate appears triangular hole. The best drill bit is three edged thin grinding tip, smooth drilling burr less. The first grinding drill, or need to have master demonstration is better.
The drilled bit drilled out of the hole was triangular because:The center grinding deviation of the drill is also different from the sides. The drill material with large drilling thickness is big bore, and the drill plate appears triangular hole. The best drill bit is three edged thin grinding tip, smooth drilling burr less. Therefore, the first grinding drill, you need a master demonstration.
Drill bit too, two edge to the machined surface in contact angle and surface processing due to too large to cutting into bite cut,Do you like to take the knife to cut wood, and wood knife angle is close to parallel cutting more labor-saving and machine power led to the great bit angle is in itself lead to tremble bit hardtop surface triangular or pentagonal in inappropriate situations
