Q: How about the three-edge drill for processing cross holes?

A: Because the positioning effect of the three-edge positioning is better than that of the two-edge, the positioning accuracy will be better than that of the two-edge.

Q: What is the main function of the R-type crescent groove?

A: Lower cutting resistance and better chip breaking.

Q: What materials are suitable for EgiAs coating? Are there any selection requirements?

A: EgiAs coating is suitable for processing carbon steel, alloy steel, gray cast iron, ductile iron, quenched and tempered steel within 40HRC, and stainless steel. There are no 

particularly strict selection requirements.

Q: It seems that the core diameter is much smaller. How to ensure strength?

A: The core area of the ADO-TRS three-edge drill is larger than that of the two-edge drill, and the strength will be better than that of the two-edge drill.

Q: The axial force of the three-edge drill is greater than that of the two-edge drill, right?

A: Using the design of the R-type crescent groove, the resistance value can be comparable to that of the two-edge drill.

Q: For the possibility of sand inclusions in the middle of the cast steel, does the three-edge drill have an advantage?

A: A 3-edge drill is more stable than a 2-edge drill because the stability of 3-point positioning is better than 2-point positioning.

Q: Is a center drill used for processing?

A: No center drill is used for positioning because the chisel edge has better centering properties.