well, an imes mill can go faster, however i have an equal amount of faith in a successful unit with so gentle a sequence as-is, pushing down to 5-6 mins even with nasty rasp roughing, wouldnt be altogehter advantageous.
i mean lets say i manage to make it work for 5 mins, what are you going to put on pause to watch the mill for 5 mins? something that needs attention, which is the point. rushing one thing makes everything else late.
a whole puck of singles with ridicu-roughing makes even less sense. thin sprues break easy, why subject 20 units to failure potential.
this is an excersize is futility.