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Mark Grizotsky of Thornhill, Ontario, writes: We discovered new possibilities in the technology of universal gear milling, as the “dualism” inherent in these machines make them effective for achieving ...

Both these machines handle both milling and gundrilling metals of all types, with a single, powerful universal spindle. Both models feature rigid, sturdy frames along with their universal spindles, ...

On the other hand, in a general engineering establishment any milling machines installed would be of the universal type, and capable of dealing with many different operations, such as the ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...