17
YOUR GLOBAL CRAFTSMAN STUDIO
The ZET1 drill appeared in the latter half of the
1980s as the first solid carbide drill in the industry.
Its genes have been inherited by the WSTAR
drill, the current core drill product of Mitsubishi
Materials. In this issue, we trace the evolution of
the solid carbide drill.
TECHNOLOGY ARCHIVE
Hiddenwithin the design lies the history of
a challenge that became a breakthrough
in drilling technology
TECHNOLOGY ARCHIVE
History of the
Evolution of the
Solid Carbide Drill
