Excerpt from Tests of High-Speed Tool Steels on Cast Iron
The size of the bars of steel from which the tools were made was 75 in. By 1 in. For the steels from the American market. The Poldi bar was in. By 155 in., and the A and W bar was it in. By 1} in. The shape of the tool used in the tests is shown in Fig, 4. The front clearance was 1259, the top rake was 10° and the side rake was also These angles were carefully maintained throughout the tests, the angles being measured with a bevel pro tractor after each grinding.
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