Today, we will learn about the types of defects in CNC drilling and the CO2 laser process for implementing via holes. Defect Types in Drill Process Drill Eccentricity Cause: Board flex abnormality / Run-out, equipment misalignment / Foreign particles on board surface Defect Effect: Inner-layer short / Outer-layer open / Reliability issues Odd Drill Cause: Drill calibration misalignment / Stackin..

Continuing from our previous session, let's further explore the PCB drilling process. Drilling Process 1. Principles of Drilling Process The process of machining PTH (Plating Through Hole) for interlayer circuit connectivity in the stacked panels and NPTH (Non Plating Through Hole) for alignment marks and assembly of fixtures. CNC (Computer Numerical Control) Drilling involves the use of automat..