I use a mister like this: http://www.ebay.com/itm/Metal-Cuttin...QAAOSwwpdW3~EX

And I also prefer using 1-flute cutters, they are phenomenal in Alu. For coolant I use what I have easy access to; alchohol. You adjust it so there is only a light spray, and the chips will fly out and not stick to the walls. Easy cleaning afterwards as it vapors. I have a fan that pulls it out of the room, but for short jobs its gonna be ok without.


Are you using a CNC or is this a manual job?