I prefer to do a helical interpolation ramp to depth with the current tool. Especially in aluminum. This works well in most steel applications too, with the right speeds/feeds.
drill starter hole with drill bit
feed plunge with roughing endmill
chip break plunge with roughing endmill
start ramp with hammer and cold chisel
I prefer to do a helical interpolation ramp to depth with the current tool. Especially in aluminum. This works well in most steel applications too, with the right speeds/feeds.