Makino will soon be releasing HEAT Technology for 3 pass machining. Originally
developed for 2 pass part processing in order to provide greater speed in poor
flushing conditions, HEAT has been received with great enthusiasm by shops that
require fast burn times and high accuracy, but may not need superior surface
finishes. At the request of some of these customers, Makino developed settings
for a third pass using HEAT for those jobs that require a finer finish as well.
Current 2 pass settings can achieve 80 micro inch RA, while the third pass
settings will be able to provide finishes of 50-55 micro inch RA. These figures
are specifically for machining in tool steels.