The trouble is that you need some lube to stop the chips welding on the tool but that makes the chips into a slurry that won't blow away unless you have a lot of air and that blows some of the chips all over the place! I don't have a good solution to this unless you use flood cooling. With some grades of Ali the chips don't stick if the tool runs fast and you can easily blow the chips away. By the way the edge of the tool needs to get hot, the need is not to cool it but stop the dwarf welding on.