DXCST Drill bit design features and application advantages

Size range ：3.20~6.50 mm

Application advantages: excellent hole position and hole wall quality

Design features: ST Series product, small core diameter ratio drill design, 

tip chisel edge sharpening greatly reduces drilling axial force, chip breaker 

design can break chips, which is beneficial to the quality of the drilling hole wall

Processing application sharing一large size （5.00mm）DXCST Improve large pores

Test tool ：5.00mm*12.0mm

Test machine ：HITACHI Max200krpm

Test board: Nanya-FR4-NP140F-0.5oz t1.6 double-sided board x3PNL/stack

Test cover backing board: ordinary wooden backing board, conventional 0.15mm aluminum sheet.

Test parameters: S22krpm F0.66m/min R15m/min H500

Test results: (500 holes in 45°direction, thick slice holes）