Q: What is the minimum internal coolant?

A: The minimum internal coolant drill diameter of ADO-MICRO is 0.7.

Q: What is the recommended hole size for pre-drilling?

A: It is recommended to use ADO-MICRO 2D as a guide drill, because the blade diameter tolerance of ADO-MICRO 2D is +0.001~+0.01, and the blade diameter tolerance of 

ADO-MICRO 5D~30D is 0~-0.009.

Q: How much is the relationship between drilling speed and feed rate?

A: The speed has the greatest impact on the life of the drill bit, followed by the feed rate.

Q: Does ordinary equipment for small-diameter drilling need to use a speed increase handle to increase the speed?

A: Consider using it when the equipment speed does not meet the requirements.

Q: What is the internal coolant pressure?

A: 3Mpa is better.

Q: Does the filtering effect of the coolant affect the drilling process?

A: If there are too many chips in the cutting fluid, the internal coolant hole will be blocked, resulting in poor chip removal and breakage of the drill.

Q: Are there any special requirements for coolant?

A: Use filter cloth to filter, and the internal coolant pressure is recommended to reach 3Mpa.

Q: How to match the guide drill?

A: Use ADO-MICRO 2D as the guide drill.