Others
Tool Breakage Life
The drill is used continuously until it breaks (destructive test method).
Hole Diameter Evaluation
Measured by a hole tester or images of the drilled hole under a microscope.
Swarf Clogging
Swarf clogging is investigated inside the drilled hole and also on the entry board.
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| Swarf clogging (After plating) | Swarf clogging on the exit side of the entry board (Aluminum) |
