Cherry, J.2016-12-202016-12-201955-04http://dspace.lib.cranfield.ac.uk/handle/1826/11166In all the tests conducted the results obtained were reasonably consistent. High Speed Steel Tools containing 18% Tungsten and 5% Cobalt were used throughout. The same tool was used as far as possible to minimise the variables entering the tool life tests ... [cont.].enReport